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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1
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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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10
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If three numbers be in G.P., then their logarithms will be in
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2
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Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
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3
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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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4
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The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?
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5
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In an A.P., if d = -4, n = 7, an = 4, then a is
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6
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A boy agrees to work at the rate of one rupee on the first day, two rupees on the second day, and four rupees on third day and so on. How much will the boy get if he started working on the 1st of February and finishes on the 20th of February?
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7
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The first term of an Arithmetic Progression is 22 and the last term is -11. If the sum is 66, the number of terms in the sequence are:
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8
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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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9
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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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