For A.P. T18 - T8 = ........ ?
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1
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What is the sum of the following series? -64, -66, -68, ......, -100
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2
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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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3
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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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4
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The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?
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5
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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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6
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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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7
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What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
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8
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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9
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In an A.P., if d = -4, n = 7, an = 4, then a is
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10
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If 18, a, b - 3 are in A.P. then a + b =
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