How many terms are there in 20, 25, 30 . . . . . . 140?
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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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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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If log 2, log (2x -1) and log (2x + 3) are in A.P, then x is equal to ___
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4
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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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5
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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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6
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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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7
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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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8
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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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9
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If three numbers be in G.P., then their logarithms will be in
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10
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The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
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