The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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For an A.P. if a25  a20 = 45, then d equals to:
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If 18, a, b  3 are in A.P. then a + b =
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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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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The 3rd and 7th term of an arithmetic progression are 9 and 11 respectively. What is the 15th term?
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n  1 times) = ......
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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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The common difference of the A.P. \(\frac{1}{{2b}} \frac{{1  6b}}{{2b}} \frac{{1  12b}}{{2b}}\) . . . . . is
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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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What is the sum of the first 17 terms of an arithmetic progression if the first term is 20 and last term is 28?
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