A) 5050
B) 10100
C) 5151
D) 4950
E) 1100
Correct Answer: A
Solution :
The coefficient of\[x\]in the expansion of \[(1+x)(1+2x)(1+3x)....(1+100x)\]\[=1+2+3+....+100\] \[=\frac{100(100+1)}{2}=50\times 101=5050\]You need to login to perform this action.
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