The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?
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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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2
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What is the sum of the first 11 terms of an arithmetic progression if the 3rd term is -1 and the 8th term is 19?
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3
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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4
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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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5
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The first term of an Arithmetic Progression is 22 and the last term is -11. If the sum is 66, the number of terms in the sequence are:
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6
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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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7
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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8
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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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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 an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
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