Find the n^{th} term of the following sequence :
5 + 55 + 555 + . . . . T_{n}
5(10^{n}  1)
5^{n}(10^{n}  1)
5/9×(10^{n}−1)
(5/9)^{n}×(10^{n}−1)
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1
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If three numbers be in G.P., then their logarithms will be in
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2
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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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3
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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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4
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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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5
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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6
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The 7th and 21st terms of an AP are 6 and 22 respectively. Find the 26th term
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7
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How many terms are there in 20, 25, 30 . . . . . . 140?
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8
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The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
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9
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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10
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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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