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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If the sum of the series 2 + 5 + 8 + 11 … is 60100, then the number of terms are
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What is the sum of all positive integers up to 1000, which are divisible by 5 and are not divisible by 2?
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3
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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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4
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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5
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The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?
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6
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The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, the number of terms is
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7
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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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8
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If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
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9
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What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
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10
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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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