The sum of first five multiples of 3 is:
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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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2
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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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3
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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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4
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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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5
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The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?
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6
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The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
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7
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How many 2-digit positive integers are divisible by 4 or 9?
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8
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15th term of A.P., x - 7, x - 2, x + 3, ........ is
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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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10
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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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