The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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2
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If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be
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3
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What is the sum of the following series? -64, -66, -68, ......, -100
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4
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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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5
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If log 2, log (2x -1) and log (2x + 3) are in A.P, then x is equal to ___
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6
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How many terms are there in 20, 25, 30 . . . . . . 140?
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7
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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8
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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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9
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What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?
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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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