The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?
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If the 7th term of a H.P. is 1/10 and the 12th term is 1/25, then the 20th term is
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2
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If the fifth term of a GP is 81 and first term is 16, what will be the 4th term of the GP?
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3
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
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4
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The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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5
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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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6
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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7
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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8
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Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then
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9
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What is the sum of the following series? -64, -66, -68, ......, -100
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10
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How many terms are there in 20, 25, 30 . . . . . . 140?
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