If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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The sum of first five multiples of 3 is:
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For an A.P. if a25  a20 = 45, then d equals to:
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If a + 1, 2a + 1, 4a  1 are in A.P., then the value of a is:
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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 3rd and 8th term of an arithmetic progression are 13 and 2 respectively. What is the 14th term?
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If 18, a, b  3 are in A.P. then a + b =
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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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If sum of n terms of an A.P. is 3n^{2} + 5n and T^{m} = 164 then m =
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The nth term of an A.P., the sum of whose n terms is Sn, is
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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