JEE Main 202117 Mar, Evening shiftMathematicsEasyBinomial Theorem and Its Simple Applications131× since 2002The value of ∑r=06(6Cr . 6C6−r)\sum\limits_{r = 0}^6 {\left( {{}^6{C_r}\,.\,{}^6{C_{6 - r}}} \right)}r=0∑6(6Cr.6C6−r) is equal to :AOption A. 924BOption B. 1024COption C. 1124DOption D. 1324CheckSkip · show solution