If the fifth term of a GP is 81 and first term is 16, what will be the 4th term of the GP?
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If 18, a, b - 3 are in A.P. then a + b =
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2
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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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3
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The sum of first five multiples of 3 is:
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4
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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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5
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The two geometric means between the number 1 and 64 are
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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 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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8
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In an A.P., if d = -4, n = 7, an = 4, then a is
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9
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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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10
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The nth term of an A.P., the sum of whose n terms is Sn, is
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