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1) 3, 13, 23, 33,, a) 8, b) 9, c) 10, d) 11, a) 26, 19, 13, 7.., b) 26, 18, 11, 4, .., c) 26, 19, 12, 5,.., d) 26, 18, 12, 5, .., а) р+(n+1)q b) р- (n+1)q c) р+ (n- 1)q d) р- (n- 1)q, 4) Jod geạ 17, 12, 7, 2.. 3 'n' 3e t, a) 12+ 5n, b) 5n - 22, c) 22 - 5n d) 22n - 5., 5) wodd sao3d geạobo a,=13, a,=61 ed3, aD e, a) 8, b) 6, c) 4, d) 2, Scanned with CamScanner

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a) 83e, b) 95e, c) 103e, d) 123e, 7) Jaodd geạoog a, - a, = 45 e33 aaa, %3D, 20, a) 9, b) -9, c) 18, d) 23, 1) 19,, 31, -, 2) 16,, 31, 3) – 6 , – , 14, 4), 7,, III, B,, 1), 10, 10, 2), -2, 3), 4, -3, 1, 4), -1, 2, Scanned with CamScanner

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IV, a, d, a, n, 1), 13, 15, 55, 2), -2, 22, -39, 3), 12, 4, 56, 4), 4, 2, 5, 5), 3, -2, 9, 1) Jaod ea 8, -4, -16, -28, .. ở a e aa a 880 endaa?, Scanned with CamScanner