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In the coefficients of rth, `(r+1)t h ,a n d(r+2)t h`terms in the binomial expansion of `(1+y)^m`are in A.P., then prove that `m^2-m(4r+1)+4r^2-2=0.`A. `m^(2)-m(4r+1)+4r^(1) + 2 = 0`B. `m^(2) - m(4r+1)-4^(+1)-2 = 0`C. `m^(2) - m(4r+1)+4r^(1) + 2 = 0`D. `m^(2)-m(4r-1)+4r^(+1)=0` |
| Answer» Correct Answer - A | |