If 18, a, b - 3 are in A.P. then a + b =
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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2
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If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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3
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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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4
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In an A.P., if d = -4, n = 7, an = 4, then a is
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5
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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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6
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Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then
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7
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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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8
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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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9
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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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10
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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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