15th term of A.P., x - 7, x - 2, x + 3, ........ is
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1
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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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2
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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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3
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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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4
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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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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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The 7th and 21st terms of an AP are 6 and -22 respectively. Find the 26th term
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7
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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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8
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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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9
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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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10
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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