The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?
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How many terms are there in 20, 25, 30 . . . . . . 140?
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2
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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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3
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In an A.P., if d = -4, n = 7, an = 4, then a is
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4
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If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
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5
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The two geometric means between the number 1 and 64 are
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6
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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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7
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If the sums of n terms of two arithmetic progressions are in the ratio \(\frac{{3n + 5}}{{5n + 7}}\) then their nth terms are in the ration
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8
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If three numbers be in G.P., then their logarithms will be in
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9
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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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10
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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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