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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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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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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If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
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The 2nd and 8th term of an arithmetic progression are 17 and 1 respectively. What is the 14th term?
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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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The 3rd and 9th term of an arithmetic progression are 8 and 10 respectively. What is the 16th term?
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The 3rd and 7th term of an arithmetic progression are 9 and 11 respectively. What is the 15th term?
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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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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 7th and 12th term of an arithmetic progression are 15 and 5 respectively. What is the 16th term?
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