If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be
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If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
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If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)
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The common difference of the A.P. \(\frac{1}{3}, \frac{{1 - 3b}}{3} , \frac{{1 - 6b}}{3}\) . . . . . . is
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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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If 18, a, b - 3 are in A.P. then a + b =
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6
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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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7
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What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
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8
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The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?
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9
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The sum of first five multiples of 3 is:
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10
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Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
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