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12:23 SSR - QA ull 68%, , xX &@ NCERT Solutions for Cl... n oe, , oy, , tiwariacademy.com, , Solutions, ich Are [he Most Interesting, Questions Of Ex. 1.5 Of Class 9 Maths?, , , , Mathematics, (www.tiwariacademy.com) KA, (Chapter — 1)(Number Systems) wM, (Class - 9), , Exercise 1.3, , Question 1:, Write the following in decimal form and say what kind of decimal expansion each has:, , 1, os Gis (iii) 47, (iv) S we we, €. Answer 1:, , i) aan = 0.3, Terminating., , (ii) = = 0.09, Recurring & Non-terminating., , (iii) 4e = 4.125, Terminating., , (iv) s = 0.230769, Recurring & Non-terminating., , (v) 2 = 0.18, Recurring & Non-terminating., , (vi) 2 = 0.8225, Terminating., , Question 2:, You know that . = 0.142857 . Can you predict what the decimal expansions of z, 3, ,, , 5, $ are, without actually doing the long division? If so, how?, , [Hint: Study the remainders while finding the value of 5 carefully.], €. Answer 2:, , 2 3 5 6, Without actual long division, the decimal expansions of PPPs are as follows:, , a, 1. <eenmaeee anaes, =2 xg= 2x 0.142857 = 0.285714, , , , , , 3x>=3 x 0.142857 = 0.428571, , 4x== 4x 0.142857 = 0.571428, , 5x >=5 x 0.142857 = 0.714285, , , , NID NIG VIR NIw NIN, Me Ste Te ate, , Ml, , 6 x 0.142857 = 0.857142, , ul, a, x, , www.tiwariacademy.com, A Step towards free Education, , , , , , 1, , , , , Higher liquidity, Lower risk. Better risk rewards,, Park your money for the shart term with be
