JEE Math Practice Question
The sum of the series $${}^{20}{C_0} - {}^{20}{C_1} + {}^{20}{C_2} - {}^{20}{C_3} + .....\, - \,.....\, + {}^{20}{C_{10}}$$ is
- A.$$0$$
- B.$${}^{20}{C_{10}}$$
- C.$$ - {}^{20}{C_{10}}$$
- D.$${1 \over 2}{}^{20}{C_{10}}$$
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