Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = Sn – k Sn-1 + Sn-2 then k =
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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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How many terms are there in 20, 25, 30 . . . . . . 140?
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What is the sum of all positive integers up to 1000, which are divisible by 5 and are not divisible by 2?
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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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Find the 15th term of the sequence 20, 15, 10 . . . . .
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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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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If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
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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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10
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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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