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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The first and last term of an A.P. is a and l respectively. If S is the sum of all the terms of the A.P. and the common difference is given by \(\frac{{{l^2}  {a^2}}}{{k  \left( {l + a} \right)}}\) then k = ?
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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3
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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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4
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If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)
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5
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The 7th and 12th term of an arithmetic progression are 15 and 5 respectively. What is the 16th term?
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6
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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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7
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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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8
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If three numbers be in G.P., then their logarithms will be in
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9
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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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10
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The 3^{rd} and 7^{th} term of an arithmetic progression are 9 and 11 respectively. What is the 15^{th} term?
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