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Simplify the following questions and find the, value of (?)., िन िल खत, , ों को सरल कीिजए और (?) का मान, , ात कीिजए।, Q1. 5% of 3100+ 41% of 1100 – 50% of 790 = ?, , (d) 1, (e) 1, Q7. [(60) ÷ 30 × 18] ÷ 24 = 9 × ?, , (e) 250, Q2. 1107 ÷ 9 × 6 + 236 – 874 = ?, (a) 110, , (b) 10, (d) 25, , (c) 100, , (e) 40, , (d) 120, , Q8. 2 + 3, , (e) 200, 2673 का, , (a) 15, (c) 20, , (b) 105, , 𝑜𝑓, , का, , (b) 450, , (d) 3, , (c) 465, , (e) 6, , (d) 486, , Q9. 36460 + 53750 = ? + 85450, , (e) 490, of √4913 +, , 𝑜𝑓 √3375 = ?, , + √3375 का, , =?, , (a) 13, (b) 11, (c) 9, (d) 15, (e) 17, Q5. √? = 40% 𝑜𝑓 70 + 32% 𝑜𝑓100, , (a) 4190, (b) 4590, (c) 4760, (d) 4390, (e) 4250, Q10. 50% of 650 + ?% of 350 = 500, 650 का 50% + 350 का ?% = 500, (a) 40, (b) 55, , √? = 70 का 40% + 100 का 32%, (a) 3844, , (c) 45, , (b) 3424, , (e) 60, , (d) 4024, (e) 3640, , =?, , (b) 4, , का = ?, , (c) 4, , (c) 3600, , −2, , (a) 4, , 𝑜𝑓 2673 = ?, , (a) 470, , √4913 का, , ÷5 =?, , (b) 3, , (b) 221, , 𝑜𝑓, , का 3, , ÷5=?, , (a) 3, (c) 2, , (d) 255, , Q4., , 2 − 2, , (a) 230, (c) 211, , Q3., , Q6. 2 − 3 𝑜𝑓 2, , (d) 50, Q11. (46351–36418–4505) ÷ ? = 1357, a) 4, b) 6, c) 3, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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Q12., , d) 2, , d) 81/2, , e) 5, , e) 22/5, , 8888 + 848 + 88 – ? = 7337 + 737, , Q18. 25.6% of 250 + √? = 119, , a) 1750, , a) 4225, , b) 1650, , b) 3025, , c) 1550, , c) 2025, , d) 1450, , d) 5625, , e) 1250, , e) None of these (इनम से कोई नही ं), , Q13. 618 + 62 × 0.50 – 29 = ?, a) 625, , Q19. 4 − 5 = ? −2 +, a), , b) 660, , b) 2, , c) 640, d) 655, , c) 1, , e) 620, , d) 1, , Q14. 2 × 3 + ? = 12, , e) 1, Q20. 555.05 + 55.50 + 5.55 + 5 + 0.55 = ?, , a) 2, , a) 621.65, , b) 2, , b) 655.75, , c) 3, , c) 634.85, , d) 3, , d) 647.35, e) None of these (इनम से कोई नही)ं, , e) 2, Q15. 3.2% of 500 × 2.4% of ? = 288, a) 650, , Q.21 39% of 450 + 51% of 340 – 40% of 255 =?, a) 264.9, b) 246.9, , b) 700, , c) 236.9, , c) 600, , d) 242.9, , d) 750, , e) 251.7, , e) 550, Q16. ? % of 800 = 293 – 22% of 750, , 𝟐, , 𝟓, , 𝟕, , 𝟓, , 𝟕, , 𝟏𝟎, , Q22. 𝟑 + 𝟒 + 𝟓, , a) 14, , a) 9, , b) 18, , b) 7, , c) 12, , =? +𝟕, , 𝟐, 𝟕, , c) 6, , d) 16, , d) 11, , e) 20, , e) 5, Q17. 3 ÷ 6 × 1 ×, a) 21/7, b) 22/9, c) 9/22, , =?, , Q.23 67% of 700 + 73% of 510 – 52% of 220 =, a) 6369, b) 6269, c) 7629, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466, , ?

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e) 248, , Q.35 2 + 3 × 2 ÷ 6 = ?, , Q.41. 3.2% of 500 × 2. 4% of ? = 288, , a) 4, , a) 650, , b) 4, , b) 700, , c) 42, , c) 600, , d) 18, , d) 750, , e) 1, , e) 850, , Q.36 5 + 3 − 4, , Q42. (– 251 × 21 × (– 12)) ÷? = 158.13, , =? +1, , a) 250, , a) 1, , b) 400, , b) 1, , c) 300, , c) 2, , d) 15, , d) 2, , e) 18, Q.43 [(130) ÷ 25 × 15] ÷ 30 = ?, , e) 3, Q.37 46% of 450 + 84% of 525 – 55% of 880=?, 450 का 46% + 525 का 84% – 880 का 55% =?, a) 164, , c) 326, e) 426, , c) 170, , Q44. (6.5% of 375) – (0.85% of 230) =?, , d) 162, , a) 23.42, , e) 160, 256 +, , b) 314, d) 338, , b) 166, , Q.38, , a) 352, , 𝑜𝑓 400 +, , 𝑜𝑓 ? =, , 𝑜𝑓 208, , b) 24.24, c) 21.64, , a) 36, , d) 25.76, , b) 32, , e) 22.42, , c) 34, d) 30, e) 28, Q39. ? % of 250 – 48% of 250 =?, a) 70, b) 75, c) 85, d) 72, e) 80, Q40. √46225 ÷ (3125) =? −215, a) 258, b) 255, , Q45. 13.141 + 31.417 – 27.118 =?, a) 16.441, b) 17.543, c) 17.490, d) 17.440, e) 17.590, Q46. ? + (14) × 18 ÷ 6 − 1029 = 80 × (12 − 7), a) 25, b) 841, c) 729, d) 27, e) 29, Q47. [(84) ÷ 28 × 12] ÷ 24 = 7 ×?, , c) 218, , a) 15, , d) 235, , b) 17, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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c) 18, , c) 23, , d) 21, , d) 24, , e) 24, , e) 25, , Q48. (7.9% of 134) – (3.4% of 79) =?, , Q54. (? +√5)(? + 5 − 2√5) = 8 + 5√5, , (134 का 7.9%) – (79 का 3.4%) =?, , a) 2, , a) 8.1, , b) 2√5, , b) 7.9, , c) √5, , c) 8.6, , d) 2.5, , d) 7.3, , e) 4, , e) 6.8, , Q55. 712 + 92× 0.50 – 83 =?, , Q.49. 2√392 – 21 + √8– 7, , a) 685, , = (? ), , b) 625, , a) 6, , c) 635, , b) 4, , d) 675, , c) 12, , e) 680, , d) 2, , Q56. 34928 – 2591 – 14986 = ?, , e) 8, Q50. 46% of 450 +? % of 19.07 = 359.56, a) 795, , b) 17355, c) 17351, , b) 805, , d) 17390, , c) 815, , e) 17240, , d) 800, , Q57. 27% of 450 – ? % of 375 = 76.5, , e) 820, Q.51 3 of, , a) 17546, , a) 14, , of 20% of 375 =?, , b) 19, , a) 92.75, , c) 12, , b) 93.75, , d) 15, , c) 94.75, , e) 22, , d) 93, , Q58. 17 × 1, , e) 91.25, Q52. ? %𝑜𝑓 √729 × 4 = 425.798 − 101.798, , a) 20, , a) 305, , b) 21, , b) 310, , c) 19, , c) 300, , d) 20, , d) 308, , e) 24, , e) 312, Q53. 2046 ÷ (30% of 620) = 40 × 1, a) 21, b) 22, , =?, , of (√? ÷ 20), , Q59. (12 × 19) + (13 × 8) = (15 × 14) +?, a) 124, b) 122, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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c) 126, , Q66.√12.25 × 18 – (?)² = (6)² + √4, , d) 128, , a) 7, , e) 132, Q60. 7, , ., , ÷ (343), , b) 6, ., , × (49), , ., , =7, , c) 5, , ?, , a) 13.4, , d) 4, , b) 12.8, , e) 3, , c) 11.4, , Q67. (1600 + 1970) ÷ (825 + 365) =?, , d) 9.6, , a) 5, , e) 12.4, , b) 3, c) 1, , Q61.28 × 2 × 64 ÷ √256 =? + 540, a) 272, , d) 2.25, , b) 292, c) 324, , e) 2.75, Q68. √625 ÷ √16 × 6 =? % of 300, , d) 384, , a) 15, , e) 356, , b) 12.5, c) 17.5, , Q62.125% of of ? = 84% of 1250, , d) 10, , a) 550, b) 630, c) 680, , e) 8.5, Q69. 26 × 15 + 310 – (15)² = 25% of ?, a) 1600, , d) 720, , b) 1800, , e) 580, , c) 1900, , Q63. 544 ÷ 16 × 32 – 766 + 224 =?, , d) 1500, , a) 342, b) 424, c) 546, , e) 1700, Q70. √81 × √625 + 1225 = (?)² – 150, a) 50, , d) 625, , b) 45, , e) 284, , c) 35, , Q64.88% of 1850 + 35% of 2400 =? + 758, , d) 30, , a) 1710, , e) 40, , b) 1850, c) 1620, , Q71., , × (21 × 2) – 380% 𝑜𝑓 220 = 𝑜𝑓 ?, , d) 1580, , a) 330, , e) 1550, , b) 358, , Q65. 50% of 616 -? % of 400 = 108, , c) 342, , a) 40, , d) 352, , b) 52, , e) 362, , c) 45, , Q72. 44 × 46 – 950% of 160 = √441 × ?, , d) 50, , a) 14, , e) 65, , b) 24, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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c) 18, , c) 18, , d) 28, , d) 16, , e) 26, , e) 12, , Q73. 2744 – 1418 + 1756 – 1956 = ? + 986, , Q79. √1714 + 520 ÷ 2 – 190 × 5 = ?, , a) 110, , a) 32, , b) 120, , b) 36, , c) 140, , c) 42, , d) 150, , d) 52, , e) 180, , e) 26, , Q74. 77% of 150 + 37.5% of 260 = ?% of 284, , Q80. 25% of 360 × 5% of 180 = ? + 10, , a) 75, , a) 820, , b) 65, , b) 810, , c) 55, , c) 790, , d) 45, , d) 800, , e) 85, , e) 700, Q.81 23 + 15 − ? = 12 ×, , Q75. 22.5% of 120 + 47.5% of 360 = ? × 11, , a) 31, , a) 19, , b) 32, , b) 14, , c) 32, , c) 15, d) 16, , d) 32, , e) 18, , e) 31, , Q76. 33 % of 360 + 66 % of 120 =?× 7, , Q82. 16.5 × 18 ÷ √729 × 11 + 48 = (? ), , a) 22.5, , a) 12, , b) 27.5, , b) 14, , c) 2.25, , c) 15, , d) 2.75, , d) 13, , e) 225, , e) 16, , Q77. 220 + 33 % of 1020 + ? = 5 % of 2700 + 400, , Q83. (4080 + 5160) ÷? = 440, a) 21, , a) –10, , b) 25, , b) 10, , c) 31, , c) 20, , d) 28, , d) –20, , e) 29, , e) 15, Q78. (1428 + 600 ÷ 2) ÷ (720 ÷ 5), a) 14, b) 144, , Q84., , √961 + √841 − √625 ÷ 5 × √35 = ?, a) 5, b) 6, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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c) 8, , e) 7, , d) 9, , Q.91 9876 ÷ 24.96 + 215.005 – ? = 309.99, , e) 7, , a) 395, , Q85. ?² ÷ 352 = 40% of, , b) 295, , × 400., , c) 300, , a) 16, , d) 315, , b) 150, , e) 310, , c) 15, , Q.92 40.05% 𝑜𝑓 349.9 + 59.89% 𝑜𝑓 249.98 =?, , d) 160, , a) 280, , e) 140, , b) 290, , Q.86 60% of (608 ÷ 19) × ? =3³ × 4²., , c) 270, , a) 21, , d) 275, , b) 22, , e) 298, , c) 22.5, , Q93. 17% of 760 + 57% of 78.99 + 77.07 =?, , d) 21.5, , a) 138, , e) 23, , b) 142, , Q87. 12.5% of ? = √1089 ÷ √1331 × 24, a) 625, , c) 345, d) 251, , b) 576, , e) 356, , c) 600, , Q94. 35.99√?+ 32.0032√? =, , d) 529, , ., , × (? ), , a) 81, , e) 676, , b) 72, , Q88. 35% of 540 + 410% of 30 = 39% of ?, a) 800, , c) 169, , b) 750, , d) 121, , a) 4, , e) 144, Q95. (3.02) + (9.98) + (8.13) + (4.04) =?, a) 190, b) 230, c) 150, d) 210, e) 160, Q96. 16.001 × 30.999 × 8.998 =?, a) 4464, b) 4800, c) 4100, d) 3900, e) 5000, , b) 6, , Q97., , c) 700, d) 600, e) 900, Q89. 125% of, , of ? = 84% of 1250, , a) 720, b) 180, c) 120, d) 360, e) 480, Q90. 1, , c) 5, d) 3, , × 120 − (11) = (? ) − √169, , ÷, , ×, , =?, , a) 320, b) 360, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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Q.98, , c) 400, , c) 9,252, , d) 410, , d) 9,261, , e) 430, , e) 9442, , 2 +1 +2 =?, , a) 9,218, , a) 8, , b) 9,368, , b) 4, , c) 9,084, , c) 5, , d) 9,628, , d) 6, , e) 9448, Q105. 1532+ 857 + 496 – ?= 2005, , e) 7, Q99, , 12.28 × 1.5 – 36 ÷ 2.4 =?, a) 3.42, , a) 880, b) 870, c) 980, , b) 7.325, , d) 788, , c) 6.42, , e) 780, , d) 4.32, , Q106. 19.2 × 6 + 8.9 – 13.3 =? + 37.9, , e) 6.42, Q100. th of, , Q104. 225% of 5468 – 87% of 3700 =?, , th, , 1092 =?, , a) 182, b) 728, c) 364, d) 218, e) 128, Q101. 74156 – ? – 321 – 20 + 520 = 69894, a) 3451, b) 4441, c) 5401, d) 4531, e) 4414, Q102. 56% of 958 + 67% of 1008 =? % of 2000, , a) 75.7, b) 81.6, c) 74.8, d) 72.9, e) 85.2, Q107., , % of 2100 + 32% of 350 =? – 207, , a) 878, b) 788, c) 877, d) 792, e) 787, Q.108 2 of 630 – 50% of 240 =? / 630 का 2 –, 240 का 50%, , a) 40.592, , a) 1270, , b) 47.622, , b) 1350, , c) 60.592, d) 91.455, e) 50.592, , c) 1430, d) 1500, e) 1400, Q.109 √729 𝑜𝑓 + √324 ÷ 6 =? /4/3 का √729 +, , Q.103 16 % of 3500 ÷ √784 = (? ), a) 9,571, b) 9,921, , √324 ÷ 6, a) 22, b) 12, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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c) 18, , c) 262, , d) 15, , d) 200, , e) 28, , e) 308, , Q.110 48% of 950 – 46% of 840 =?, a) 75, b) 72, , Q116. 32.87% of ? −17.87 × 44.86 − √399.81 =, (24.98) + 29.89, a) 4450, , c) 65.6, , b) 4500, , d) 70.5, , c) 4350, , e) 69.6, , d) 4600, , Q111., , ×, , × ÷, , =?, , a) 42.15, b) 45.50, , e) 4900, Q117. (4 × 4) ÷ (512 ÷ 8) × (32 × 8) =, (2 × 2)?, a) 8, , c) 41.25, , b) 12, , d) 35.25, , c) 6, , e) 25.15, Q112.49.11 × ÷ 14.09 + √𝑥 = 1025 ÷ 257, a) 9, , d) 14, e) None of these/ इनम से कोई नही ं, Q118. 2√392 − 21 + √8 − 7, , b) 8, , a) 4, , c) 27, d) 16, e) 25, Q113. × (15.99) + 31.9% of 3199 + 294.9 = 𝑥, a) 10, , b) −4, c) 12, d) 2, e) 6, Q119. 1 + 1 − 1 =? +1, , b) 11, , a), , c) 12, d) 15, , b), , e) 18, , c), , Q114.? % of 6519.97 + (21.97) − 29.98% of, 9139.93 = (25.91), a) 25, , d), e) None of these / इनम से कोई नही ं, Q120., , b) 15, c) 30, d) 45, e) 40, Q115., , = (? ), , ., (, , ?, ., , ), , + 61.87% of 1449.87 =, , −√2024.87 + 13.89% of 7099.97, a) 222, b) 282, , of 30% of 3420 = (? ) × 2, , a) (81), b) 7, c) 9, d) 81, e) 49, Q121. 65% of √3136 × 5 =? +154, a) 56, b) 28, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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c) 8, , c) 4, , d) 13, , d) 3, , e) 2, , e) 5, , Q134. 38% of 295 + 62% of 445 = ?, , Q140. × 2286 +, , a) 380, , a) 916, , b) 388, , b) 1016, , c) 346, , c) 1216, , d) 391, , d) 1026, , e) 420, Q135. 3 ÷ 2 × 4 + 1 = ?, , e) 1256, Q141. 7802 + 132 − 8963 + 1326 =? × 33, , a) 7, , a) 6, , b) 4, , b) 12, c) 21, , c) 3, , d) 9, , d) 8, , e) 14, , e) 3, Q136. 44800 ÷ 320 × 3 = 2156 ÷ 14 +, (?) −1728 ÷ 144, a) 268, b) 248, c) 367, d) 378, e) 278, Q137. √1296 − √64 ÷ 2 = √?, a) 81, b) 36, c) 64, d) 49, e) 25, Q138. (453 + 795) ÷ √? = 78, a) 256, b) 16, c) 14, d) 196, e) 169, Q139., a) 2, b) 1, , × 1397 =?, , ×1 ×2 + =?, , Q142., , × 950−? = 19, a) 17, b) 21, c) 23, d) 19, e) 11, , Q143. (396 ÷ 16.5 + ? ) ÷ 20 = 7, a) 4, b) 5, c) 8, d) 2, e) 3, Q144. ? × 8 − 250 = 398, a) 81, b) 14, c) 12, d) 3, e) 9, Q145. √576 × 15 ÷ √? = 9, a) 1600, b) 1642, c) 1635, d) 1636, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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e) 1645, , S2. Ans.(c), , Q146. 60% of, , ×, , =?, , = 100, , a) 0.5, , S3. Ans.(d), 3 4 18, ?= ×, ×, × 2673, 4 27 11, = 2 × 243, , b) 0.05, c) 0.005, d) 0.04, e) 0.4, Q147. × √? + 104 ÷ 4 = 30, a) 150, b) 120, c) 100, e) l80, Q148. ?% of 240 = 80% of 150+60, a) 80, , S4. Ans.(b), 4, 7, ?=, × 17 +, × 15, 17, 15, = 11, , c) 70, d) 75, e) 85, ×√, , =?, , a) 7, b) 8, c) 9, d) 10, e) 12, Q150. 3 × 4 + =?, a) 14, b) 15, c) 12, , ⇒ ? = 3600, , S8. Ans.(d), 20 45 31, ?=, +, −, 7 14 14, 27, 6, =, =3, 7, 7, S9. Ans.(c), ? = 4,760, , d) 7, e) 10, Solution, S1. Ans.(c), ? = 31 × 5 + 41 × 11 – 5 × 79, = 606 – 395, , √? = 4 × 7 + 32, = 60, S6. Ans.(e), 14 25 21 1, ?=, −, ×, ×, 5, 7 10 5, 14 3, =, −, 5 2, 13, 3, =, =1, 10, 10, S7. Ans.(b), 90, ?=, 9, = 10, , b) 60, , = 211, , = 486, , S5. Ans.(c), , d) 90, , Q149., , ? = 738 + 236 – 874, , S10. Ans.(d), 35, ?×, = 500 − 325, 10, ⇒ ? = 50, Sol. 11 a, ?=, , =4, , Sol. 12 a, ? = 9824 – 8074 = 1750, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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Sol. 13e, , Sol.23 D, ?, = 67 × 7 + 73 × 5.1 – 52 × 2.2, 10, ? = 7269, , ? = 618 + 31 – 29 = 620, Sol. 14 e, ?=, , −, , ×, , =, , =2, , Sol.24 a, , Sol.15 d, 500 × 3.2 ?× 2.4, ×, = 288, 100, 100, ⇒ 16 × 2.4 × ? = 288 × 100, 288 × 100, ⇒ ?=, = 750, 16 × 2.4, Sol.16 d, 800 ×?, 750 × 22, = 293 −, 100, 100, ⇒ 8 × ? = 293 − 165 = 128, 128, ⇒ ?=, = 16, 8, Sol. 17 b, 10 45 3 22, ?=, ÷, × ×, 3, 7 2 7, 10 7 3 22 22, =, ×, × ×, =, 3 45 2 7, 9, Sol. 18 b, 25.6, 250 ×, + √? = 119, 100, ⇒ 64 + √? = 119, , ? = 3564 + 348.6 + 574.34 – 673.85, = 3813.09, Sol.25 c, ? 3 15 13, 52, × ×, ×, × 544 =, 5 4 17 6, 7, 52, ⇒ ?× 52 × 3 =, 7, 1, ⇒ ?=, 21, Sol.26 b, ? = 86.66 + 200 + 253, = 539.66, Sol.27 a, 25 28 12+? 500, ×, ×, =, 7, 5, 6, 9, ⇒ ? = – 1Sol.28 e, ? = 4168 + 279 = 4447, Sol.29 b, , ⇒ √? = 119 − 64 = 55, ⇒ ? = 3025, Sol.19, 5 5 1 11, ?= 4 −5+2 + − + −, 6 9 3 18, 15 − 10 + 6 − 11, ⇒? = 1 +, = 1+0= 1, 18, Sol. 20, ? = 621.65, Sol.21 B, 39, 51, 40, × 450 +, × 340 –, × 255, 100, 100, 100, = 246.9, ?=, , Sol.22 C, ? = (3 + 4 + 5 − 7) +, ? =6, , 3, 2, 1, ?= 1 + +2 + +2 +, 4, 3, 2, 3 2 1, =5+, + +, 4 3 2, 23, =5+, 12, 11, 11, =5+1, =6, 12, 12, Sol.30 e, Expression, 6 42, 35, = 500 × ×, ×, 7 100 100, = 63, Sol.31 a, 8888 + 848 + 88 – ? = 7337 + 737, ⇒ 9824 – ? = 8074, ⇒ ? = 9824 – 8074, , + +, , −, , = 1750, Sol.32 c, ?=, , ×, , = 44, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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Sol.33 a, ?=, Sol.34 c, ?=, Sol.35 a, ?=, Sol.36 d, , 55, 60, × 280 +, × 555 = 487, 100, 100, 4 7 121, ×, ×, × 81 = 231, 9 11 12, 8 15 12 5, 133, 1, +, ×, ×, =, =4, 3 4, 5 33, 33, 33, , 1 2 11 1, ? = (5 + 3 − 4 − 1) + + −, −, 6 5 15 3, 1 5, 1, =3− = =2, 2 2, 2, Sol. 37 a, ×, , ?=, , ×, , ×, , ? = 164, Sol. 38 b, √256 + 320 +, , × ? = 3×16, , ? = 32, Sol.39 e, ? (2.5 − 1) = 48 × 2.5, Or (या), ? =, , ., , = 80, , Sol. 40 a, 215 ÷ 5 =? −215, or (या) ? = 43 + 215 = 258, Sol.41 d, 2.4, ×? = 288, 100, ? = 750, Sol.42 b, (−251 × 21 × (−12)) 15813, =, ?, 100, ? = 400, Sol.43 d, 130 × 130, 1, ?=, × 15, = 338, 25, 30, Sol.44 e, ? = 24.375 − 1.955 = 22.420, Sol.45 d, 16 ×, , ? = 13.141 + 31.417 – 27 .118, = 17.44, , Sol.46 e, ? − 441 = 80 × 5, ⇒ ? = √841, ⇒ ? = 29, Sol. 47 c, ×, , 7 ×? =, , × 12 ×, , ? = 18, Sol. 48 b, ?=, , ., , × 134 −, , ., , × 79 = 7.9, , Sol.49 a, (?)² = 2 × 7√8 – 21 + 8 + 49 – 14√8, = 57 – 21, = 36, ∴ ? = ±6, Sol.50 d, ?, × 19.07 = 359.56 – 207, 100, 152.56 × 100, ?=, 19.07, ? = 800, Sol.51 b, ? = 375 ×, , 5, 20, ×, ×3, 12 100, , = 93.75, Sol.52 c, ? % of √729 × 4 = 425.798 −101.798, ? % × 27 × 4 = 324, ? % × 108 = 324, 324, ?% =, = 3, 108, ⇒ ?% = 3, ⇒ ? = 300, Sol.53 e, 2046 ÷, , ×, , = 40 ×, , ×, , √?, , 44 × √?, 20, ⇒ 11 × 20 = 44 × √?, ⇒ 11 =, , ⇒ ?=, , = 25, , Sol.54 a, (? +√5)(? + 5 − 2√5) = 8 + 5√5, 𝑈𝑠𝑒 𝑎𝑙𝑔𝑒𝑏𝑟𝑖𝑐 𝑒𝑞𝑢𝑎𝑡𝑖𝑜𝑛, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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5 7, 84, × ×? =, × 1250, 4 6, 100, 84, 4 6, ?=, × 1250 × ×, 100, 5 7, ? =720, , 𝑎 + 𝑏 = (𝑎 + 𝑏)(𝑎 + 𝑏 − 𝑎𝑏), where a=2; b=√5, Sol. 55 d, ? = 712 + 92 × 0.5 – 83, = 712 + 46 – 83 = 675, , Sol.63 c, , Sol.56 c, , 1, × 32 − 766 + 224 =?, 16, 1088 – 766 + 224 =?, 544 ×, , 34928 – 2591 – 14986 = ?, = 34928 – 17577 = 17351, , ? = 546, , Sol.57 c, , Sol.64 a, , 27% of 450 – ?% of 375 = 76.5, 450 का - %27 375 का? % = 76.5, 27, ?, or (या), 450 ×, − 375 ×, = 76.5, 100, 100, ?, 𝑜𝑟(या), 375 ×, = 121.5 − 76.5 = 45, 100, ×, ∴ ?=, = 12, Sol. 58 a, , ? = 356, Sol.62 d, , 1628 + 840 – 758 =?, ? = 1710, Sol.65 d, ?, , 0.50 × 616 −, 308 − 108 =, , 2, 17, 53 123, ? = 17 × 1, =, ×, 3, 106, 3 106, 41, 1, = 20, 2, 2, Sol. 59 b, (12 × 19) + (13 × 8) = (15 × 14) +?, 𝑜𝑟, ? +210 = 228 + 104, 𝑜𝑟, ? = 228 + 104 − 210 = 122, ∴ ? = 122, Sol.60 a, (7) . ÷ (343) . × (49) . = (7)?, or (या), (7)? = (7) . ÷ (7 ) . × (7 ), or(या), (7)? = (7) . ÷ (7) . × (7) ., (7) ., or(या), (7)? =, × (7) ., (7) ., or(या), (7)? = (7) . . . = (7) ., or(या), (7)? = (7) ., ∴? = 13.4, Sol.61 e, 1, 28 × 2 × 64 × = ? +540, 4, 896 – 540 =?, , 0.88 × 1850 + 35 × 24 =? + 758, , 200 =, Sol.66 c, , × 400 = 108, , ?, × 400, 100, , ?, × 400 ⇒? = 50, 100, , 3.5 × 18 – (?)² = 36 + 2, 63 – 38 = (?)², 25 = (?)², ?=5, Sol.67 b, 3570, 1190, ?=3, ?=, ., , Sol.68 b, 25 ÷ 4 × 6, =?, 3, ? = 12.5, Sol.69 c, (390 + 310 – 225) × 4 =?, (700 – 225) × 4 =?, 475 × 4 =?, ? = 1900, Sol.70 e, 9 × 25 + 1225 + 150 = (?)², 225 + 1225 + 150 = (?)², , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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? = √1600, , ? = √1714 + 260 – 950, , ? = 40, Sol.71 D, 187, ?, × (42) – 22 × 38 =, 357, 4, 11, ?, × 42 × 42 – 22 × 38 =, 21, 4, 22 (42 – 38) × 4 = ?, ? = 352, Sol.72 b, 44 × 46 – 160% of 950 = 21 × ?, 2024 – 1520 = 21 × ?, 504, ?=, = 24, 21, Sol.73 c, ? = 1126 – 986 = 140, Sol.74 a, 77% × 150 + 37.5% × 260 = ?% × 284, 115.5 + 97.5 = ?% × 284, 213, × 100 =?, 284, ? = 75, So.75 e, 22.5% of 120 + 47.5% of 360 = ? × 11, ⇒? × 11 = 27 +171, ⇒ ?=, , = 18, , ? = √1024 = 32, Sol.80 d, 250 × 36 50 × 18, ×, =? +10, 100, 100, ⇒ 810 = ? + 10, ∴ ? = 810 – 10 = 800, Sol.81 a, 215 142, 74, +, − ?=, 9, 9, 9, 283, 4, ?=, = 31, 9, 9, Sol.82 d, 165, 1, × 18 ×, × 11 + 48 = (? ), 10, 27, (?)² = 11 × 11 + 48, (?)² = 121 + 48, (?)² = 169, ? = 13, Sol.83 a, 1, = 440, ?, 9240, ?=, = 21, 440, Sol.84 e, 9240 ×, , √31 + 29 − 25 ×, , Sol.76 b, , ? = √35 ×, , 80 1, 2, = × 360 + × 120, 11 3, 3, 11, ⇒? =, × [120 + 80], 80, = 11 × 2.5, = 27.5, Sol.77 a, , ?=7, , ⇒?×, , 220 + 340 + ? =, , × 2700 + 400, , ? = 150 + 400 – 220 – 340, ? = –10, Sol.78 e, ? = (1728) ÷ (144), ? = 12, Sol.79 a, , 1, × √35 = ?, 5, , 1, × √35, 5, , Sol.85 d, 1, 40, 5, =, ×, × 400, 352 100 11, 40 × 5 × 4 × 352, (? ) =, = 25600, 11, (? ) = (160), ? = 160, (? ) ×, , Sol.86 c, 60, × 32 ×? = 27 × 16, 100, 27 × 16 × 10, ?=, = 22.5, 6 × 32, Sol.87 b, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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1, 1, × ? = 33 ×, × 24, 8, 11, ? = 24 × 24, ? = 576, Sol.88 a, 35, 410, 39, × 540 +, × 30 =, ×x, 100, 100, 100, 18900 + 12300 =39x, x = 800, Sol.89 a, 5 7, 84, × ×? =, × 1250, 4 6, 100, 84, 4 6, ?=, × 125 × ×, 10, 5 7, ? = 720, Sol.90 c, 21 361, ×, − 121 + 13 = (? ), 19, 3, (?)² = 133 – 121 + 13, (?)² = 25, , ? = (2 + 1 + 2) +, , + +, , =5+, =5, Sol. 99 a, ? = 3.42, Sol.100 a, ? = × × 1092, = 182, Sol. 101 b, ? = 74,676 – 70,235, = 4,441, Sol. 102 c, 56 × 958 + 67 × 1008 = ? × 2000, ⇒ ? = 60.592, Sol.103 d, 21 = (? ), , ?=5, , ⇒ ? = 9,261, , Sol. 91 c, ? ≃ 610 − 310, ≃ 300, Sol.92 b, , Sol.104 c ? =12,303 - 3,219, = 9,084, , ? ≃ 4 × 35 + 6 × 25, ≃ 290, , Sol.105 a, ? = 2885 - 2005, , Sol.93 d, , ? = 880, , ≈129+ 45+ 77 ≈ 251, Sol.94 d, , Sol.106 d, ? = 110.8 – 37.9, , 36√𝑥 + 32√𝑥 =, 68√𝑥 =, , ×𝑥, , ? = 72.9, Sol.107 b, , ×𝑥, , 𝑥 − 121𝑥 = 0, ⇒ x = 0, 121, Sol.95 a, ≈ 9 + 100 + 64 + 16 ≈ 190, Sol. 96 a, ? ≃ 16 × 31 × 9, ≃ 4464, , ? = 581 + 207 = 788, Sol.108 b, ? = × 630 −, , × 240, , = 1470 − 120, = 1350, Sol.109 d, ?= 9 × +, , Sol.97 b, ?≃, , ≃ 360, Sol.98 c, , ×, , ×, , ? = 12 + 3, ? = 15, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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Sol.110 e, ?=, , × 950 −, , × 840, , 49 × ×, , ? = 2√14 × 14 × 2 − 21 + 8 + 49 − 28√2, = 28√2 − 21 + 57 − 28√2 = 36 = 6, ∴?= 6, Sol. 119 a, 1 + + 1 + − 1 − =? +1, ⇒? = 1 + + 1 + − 1 − − 1 −, = + − −, =, 3420 ×, ⇒ (? ) =, × 9140 = (26), , ?, , ∴? = √81 = 9, Sol. 121 b, , ⇒ 56 ×, , × 1450 = −√2025 +, , × 7100, , + 899 = −45 + 994, = 949 − 899, , 578+? = 50 × 16, ? = 800 − 578, ? = 222, Sol. 116 b, × ? = 625 + 30 + 810 + 20, ?=, , = (? ) × 2, = 81, , √3136 ×, , ? = 45, Sol. 115 a, ?, , ×, , ⇒ 162 = (? ) × 2, , ×, , +, , =, , Sol. 120 c, , × 3200 + 295 ≈ 𝑥, , × 6520 = 676 + 2742 − 484, , ?, , = 4?, , Sol. 118 e, , + √𝑥 ≈, , × 6520 + (22) −, , ?=, , = (4)?, , Or, ? = 6, , 12 + 1024 + 295 ≈ 𝑥, 𝑥 ≈ 1331, 𝑥 ≈ 11, Sol. 114 d, ?, , = (4)?, , ), , ×, , Or, 4, , 1 + √𝑥 ≈ 4, √𝑥 ≈ 3, 𝑥=9, Sol. 113 b, × 16 +, , (, , Or,, , = 456 − 386.4, = 69.6, Sol.111 C, 15 165 3 11, ?=, ×, × ×, 33, 4, 5 3, 165, =, 4, = 41.25, Sol. 112 a, , ?, , ×, , Or,, , ×, , ? = 4500, Sol. 117 c, (4 × 4) ÷ (512 ÷ 8) × (32 × 8) =, (2 × 2)?, , × 5 =? +154, × 5 =? +154, , ⇒ 182 =? +154, ⇒? = 182 − 154 = 28, Sol. 122 e, (55.97 − 40.97) = 15 − (? ), (? ) = 0, ?= 0, Sol. 123 d, ×, , × ×, , = (? ), , (? ) =, ?=, Sol. 124 a, 40.83 × 1.02 × 1.2 = ?, ? = 49.97592, Sol.125 c, = (? ), , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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?=, , (? ) = 14641, ? = 121, Sol.126 c, 59 × 3 = 150+ ?, ? = 27, Sol.127 c, , Sol.133 a, (0.6) ×, , % of 675 +, , (0.6), ?=5, , of 184=?, , ×, , + 46.46 =?, ? = 25 + 46.46 = 71.46, Sol.128 c, [(25) ÷ (6.25) ] × ((1.25) ÷ 5 ) = (25), × 100, , ×, , ×, , ×, , ×, ×, , = (25), , ?, , 25 = 25, , ⇒ +? = 1 ⇒? = 1 −, ?=, Sol.129 d, ×, , = (? ), , ×, , Explanation, 161 = 23 × 7, 377 = 29 × 13, 1595 = 29 × 55, 253 = 23 × 11, ×, ×, , ×, , ×, , ?=, , ×, , ×, , √? = √1296 − √64 ÷ 2, = (36 − 4) ÷ 4 =, , = (? ), , ×, , =1, , Sol.131 c, √, , ×, , √, , ×, , √, √, , Sol.134 b, 38, 62, × 295 +, × 445 = ?, 100, 100, 11210 27590, +, =?, 100, 100, 38800, ?=, = 388, 100, Sol. 135 d, 15 2 9 7, × × + =?, 4 5 2 4, 27 7 34, ?=, + =, 4 4, 4, 1, ? = 8.5 = 8, 2, Sol.136 e, 44800, 2156, 1728, ×3=, + (? ) −, 320, 14, 144, 140 × 3 = 154 – 12+?, Sol. 137 c, , =?, , = 6.25 =?, , ? = 2.5, Sol. 132 c, 12 + 15 + 11 ×? = 49, 11 × (?) = 49 – 27, , =8, , ? = 8 × 8 = 64, Sol.138 a, , 5 = (? ) ⇒? = 125, Sol.130 a, × ×, , ?, , ?, , (0.6) × (0.6), = (0.6)?, (0.6), = (0.6)?, , ? = 278, , ×, , ×, , ?, , = (25), , ×, , ×, , ×, , =2, , (453 + 795) ÷ √? = 78, =?, , ⇒, , √?, , = 78 ⇒ 78 × √? = 1248, , ⇒ √? =, , = 16, , ∴ ? = 16 × 16 = 256, Sol. 139 b, ?=, , ×1 ×2 +, , = × × + = + = =1, Sol.140 b, ? = × 2286 +, , + 1397 = 762 + 254, , = 1016, Sol.141 d, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466

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7802 + 132 − 8963 + 1326 =? × 33, ⇒ 7802 + 132 + 1326 − 8963 = ? × 33, ⇒ 9260 − 8963 = ? × 33 ⇒ 297 =? × 33, ?=, , =9, , × 950−? = 19 ⇒ √380− ? = 19, ⇒ 380− ? = 19 × 19 = 361, ⇒ ? = 380 − 361 = 19, Sol.143 b, (396 ÷ 16.5 + ? ) ÷ 20 =, ., , +?, , =, , × 20, , ⇒ 24 +? = 149 ⇒? = 149 − 24 = 125, ⇒? =5, ∴ ?= 5, Sol. 144 e, ? × 8 − 250 = 398, ⇒ ? × 8 = 398 + 250 = 648, ⇒? =, , √576 × 15 ÷ √? = 9, ⇒, , ×, , ×, , = 9 ⇒ √? =, , √?, , = 40, , ∴ ? = 40 × 40 = 1600, Sol.146 b, , Sol. 142 d, , ⇒, , Sol.145 a, , = 81, , ∴ ? = √81 = 9, , ?=, , ×, , × = 0.05, , Sol. 147 c, × √?+, , = 30, , ⇒ × √? + 26 = 30, ⇒ × √? = 30 − 26 = 4, ×, , ⇒ ?=, , = 10, , ∴ ? = 10 × 10 = 100, Sol.148 d, ?, , ⇒, , × 240 =, ×?, , × 150 + 60, , = 120 + 60 = 180, , ⇒ 24 ×? = 1800, ∴?=, , = 75, , Sol. 149 e, ?=, , ×√ × ×, , ×, , =, , = √36 × 4 = 6 × 2 = 12, Sol. 150 a, ?= 3 ×4 + =, =, , + =, , ×, , +, , = 14, , For Free Study Material & Quizzes visit : www.mathsbyarunsir.com, For any queries or suggestions email us @ [email protected] or whatsapp @ 8881331466