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A : If the coefficients of 5th, 6th , 7th terms of (1+x)^n are in A.P. then n=7 or 14. R : If the coefficients of rth, (r+1)th, (r+2)th terms of (1+x)^n are in A.P. then n^2-(4r+1) n+4r^2 = 2. |
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Answer» Both A and R are true and R is the correct EXPLANATION of A |
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