The 2^{nd} and 6^{th} term of an arithmetic progression are 8 and 20 respectively. What is the 20^{th} term?
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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What is the sum of the first 13 terms of an arithmetic progression if the first term is 10 and last term is 26?
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The first term of an Arithmetic Progression is 22 and the last term is 11. If the sum is 66, the number of terms in the sequence are:
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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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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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The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
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If the sums of n terms of two arithmetic progressions are in the ratio \(\frac{{3n + 5}}{{5n + 7}}\) then their nth terms are in the ration
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If Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn , then S3n : Sn is equal 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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Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
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