

MCQOPTIONS
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1. |
The value of \[\left( \begin{matrix} 30\\ 0\\\end{matrix} \right)\left( \begin{matrix} 30\\ 10\\\end{matrix} \right)-\left( \begin{matrix} 30\\ 1\\\end{matrix} \right)\left( \begin{matrix} 30\\ 11\\\end{matrix} \right)+\left( \begin{matrix} 30\\ 2\\\end{matrix} \right)\left( \begin{matrix} 30\\ 12\\\end{matrix} \right)+......+\left( \begin{matrix} 30\\ 20\\\end{matrix} \right)\left( \begin{matrix} 30\\ 30\\\end{matrix} \right)\][IIT Screening 2005] |
A. | \[^{60}{{C}_{20}}\] |
B. | \[^{30}{{C}_{10}}\] |
C. | \[^{60}{{C}_{30}}\] |
D. | \[^{40}{{C}_{30}}\] |
Answer» C. \[^{60}{{C}_{30}}\] | |