If 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st and 5th terms are in the ratio
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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2
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The nth term of an A.P., the sum of whose n terms is Sn, is
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3
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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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4
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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5
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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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6
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The 3rd and 7th term of an arithmetic progression are 9 and 11 respectively. What is the 15th term?
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7
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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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8
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What is the sum of the following series? 64, 66, 68, ......, 100
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9
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The common difference of the A.P. \(\frac{1}{3}, \frac{{1  3b}}{3} , \frac{{1  6b}}{3}\) . . . . . . is
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10
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What is the sum of the first 12 terms of an arithmetic progression if the 3^{rd} term is 13 and the 6^{th} term is 4?
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