A) 5050
B) - 5050
C) 100
D) 99
Correct Answer: B
Solution :
\[(x-1)(x-2)(x-3)....(x-100)\] Number of terms = 100; \ Coefficient of x99 = \[(x-1)(x-2)(x-3)...(x-100)\] = \[(-1-2-3-......-100)\] = \[-(1+2+.....+100)\] = \[-\frac{100\times 101}{2}\] = - 5050.You need to login to perform this action.
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