The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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If the sums of n terms of two arithmetic progressions are in the ratio \(\frac{{3n + 5}}{{5n + 7}}\) then their nth terms are in the ration
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2
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How many terms are there in 20, 25, 30 . . . . . . 140?
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3
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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4
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If Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn , then S3n : Sn is equal to
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5
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Find the nth term of the following sequence :
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6
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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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7
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If three numbers be in G.P., then their logarithms will be in
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8
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Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then
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9
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If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
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10
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After striking the floor, a rubber ball rebounds to 4/5th of the height from which it has fallen. Find the total distance that it travels before coming to rest if it has been gently dropped from a height of 120 metres.
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