The 3rd and 8th term of an arithmetic progression are -13 and 2 respectively. What is the 14th 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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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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A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
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4
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If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
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5
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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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6
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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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7
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The two geometric means between the number 1 and 64 are
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8
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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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9
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If the 7th term of a H.P. is 1/10 and the 12th term is 1/25, then the 20th term is
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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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