

MCQOPTIONS
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1. |
\[\frac{{{C}_{1}}}{{{C}_{0}}}+2\frac{{{C}_{2}}}{{{C}_{1}}}+3\frac{{{C}_{3}}}{{{C}_{2}}}+....+15\frac{{{C}_{15}}}{{{C}_{14}}}=\] [IIT 1962] |
A. | 100 |
B. | 120 |
C. | \[-120\] |
D. | None of these |
Answer» C. \[-120\] | |