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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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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Find the 15th term of the sequence 20, 15, 10 . . . . .
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3
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The sum of first five multiples of 3 is:
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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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In an A.P., if d = 4, n = 7, an = 4, then a is
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6
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The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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7
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The 2^{nd} and 6^{th} term of an arithmetic progression are 8 and 20 respectively. What is the 20^{th} term?
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8
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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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9
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If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
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10
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The common difference of the A.P. \(\frac{1}{{2b}} \frac{{1  6b}}{{2b}} \frac{{1  12b}}{{2b}}\) . . . . . is
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