The 7th and 21st terms of an AP are 6 and -22 respectively. Find the 26th term
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The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?
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2
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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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3
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The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
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4
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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5
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How many terms are there in 20, 25, 30 . . . . . . 140?
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6
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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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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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Find the nth term of the following sequence :
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9
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15th term of A.P., x - 7, x - 2, x + 3, ........ is
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10
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Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
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