MathematicsEasy64×since 2002Q2994The 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 :A924B1024C1124D1324Check answerSkip