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 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?
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2
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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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3
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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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4
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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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5
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If 18, a, b - 3 are in A.P. then a + b =
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6
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The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, the number of terms is
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7
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If the sum of the series 2 + 5 + 8 + 11 … is 60100, then the number of terms are
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8
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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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9
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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10
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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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