If log 2, log (2^{x} 1) and log (2^{x} + 3) are in A.P, then x is equal to ___
5/2
log_{2}5
log_{3}2
3/2
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1
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If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
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2
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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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3
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Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = S_{n} – k S_{n1} + S_{n2} then k =
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4
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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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5
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What is the sum of the first 12 terms of an arithmetic progression if the first term is 19 and last term is 36?
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6
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For an A.P. if a25  a20 = 45, then d equals to:
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7
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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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8
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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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9
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The nth term of an A.P., the sum of whose n terms is Sn, is
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10
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The sum of first five multiples of 3 is:
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