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 log 2, log (2^{x} 1) and log (2^{x} + 3) are in A.P, then x is equal to ___
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What is the sum of the first 11 terms of an arithmetic progression if the 3rd term is 1 and the 8th term is 19?
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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The common difference of the A.P. \(\frac{1}{{2b}} \frac{{1  6b}}{{2b}} \frac{{1  12b}}{{2b}}\) . . . . . is
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The sum of first five multiples of 3 is:
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If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is
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If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
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The 2^{nd} and 8^{th} term of an arithmetic progression are 17 and 1 respectively. What is the 14^{th} term?
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