1.The value of ∑r=06(6r)2\displaystyle\sum_{r=0}^{6} \binom{6}{r}^{2}r=0∑6(r6)2 is equal toa.112411241124b.132413241324c.102410241024d.924924924Login to continueOnly logged in users canattempt or see the solution.
