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If the coefficients of 2nd, 3rd and the 4th terms in the expansion of (1 + x)n are in A.P., then the value of n is(a) 2(b) 7(c) 11(d) 14 |
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Answer» If the coefficients of 2nd, 3rd and the 4th terms in the expansion of (1 + x)n are in A.P., then the value of n is (a) 2 (b) 7 (c) 11 (d) 14 |
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