What is the sum of the first 11 terms of an arithmetic progression if the 3rd term is 1 and the 8th term is 19?
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If the 7^{th} term of a H.P. is 1/10 and the 12^{th} term is 1/25, then the 20^{th} term is
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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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3
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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4
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The sum of first five multiples of 3 is:
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5
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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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6
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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7
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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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8
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The 3^{rd} and 7^{th} term of an arithmetic progression are 9 and 11 respectively. What is the 15^{th} term?
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9
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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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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