How many terms are there in the GP 5, 20, 80, 320........... 20480?
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1
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If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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2
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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3
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The 3rd and 6th term of an arithmetic progression are 13 and 5 respectively. What is the 11th term?
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4
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If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are
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5
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What is the sum of the following series? 64, 66, 68, ......, 100
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6
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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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7
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What is the sum of the first 13 terms of an arithmetic progression if the first term is 10 and last term is 26?
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8
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If a + 1, 2a + 1, 4a  1 are in A.P., then the value of a is:
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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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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
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