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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1
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......
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2
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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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3
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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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4
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Find the nth term of the following sequence :
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5
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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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6
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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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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What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?
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9
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If the sum of the series 2 + 5 + 8 + 11 … is 60100, then the number of terms are
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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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