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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The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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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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The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, the number of terms is
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5
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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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6
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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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7
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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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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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9
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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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10
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In an A.P., if d = -4, n = 7, an = 4, then a is
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