The two geometric means between the number 1 and 64 are
8 and 16
2 and 16
4 and 8
4 and 16
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1
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For an A.P. if a25 - a20 = 45, then d equals to:
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2
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A piece of equipment cost a certain factory 6,00,000. If it depreciates in value, 15% the first year, 13.5% the next year, 12% the third year, and so on, what will be its value at the end of 10 years, all percentages applying to the original cost?
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3
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If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
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4
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The sum of first n odd natural numbers in
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5
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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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6
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If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)
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7
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For A.P. T18 - T8 = ........ ?
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8
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What is the sum of the following series? -64, -66, -68, ......, -100
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9
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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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10
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If three numbers be in G.P., then their logarithms will be in
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