Counting & ProbabilityMediumBinomial Theorem, Pascal & Combinatorial Identities ShareBinomial Theorem, Pascal & Combinatorial Identities · Medium problemEvaluate ∑k=08k(8k)\displaystyle\sum_{k=0}^{8}k\binom{8}{k}k=0∑8k(k8).Check Show answer Walk through it step by step Practice more like this Review this concept