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
a = 7/4, r = 3/7
a = 2, r = 3/8
a = 3, r = 1/4
a = 3/2, r = ½
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If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
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2
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If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be
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3
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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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4
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What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?
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5
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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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6
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In an A.P., if d = -4, n = 7, an = 4, then a is
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7
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......
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8
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Find the nth term of the following sequence :
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9
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How many terms are there in 20, 25, 30 . . . . . . 140?
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10
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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