If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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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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2
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If the fifth term of a GP is 81 and first term is 16, what will be the 4th term of the GP?
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3
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In an A.P., if d = -4, n = 7, an = 4, then a is
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4
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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5
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......
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6
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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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7
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15th term of A.P., x - 7, x - 2, x + 3, ........ is
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8
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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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9
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The 3rd and 8th term of an arithmetic progression are -13 and 2 respectively. What is the 14th term?
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10
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If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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