How do I Explain this Combinatory? $$ \sum_{k=1}^{100} {{100} \choose {k}}2^k=3^{100}-1 $$
2026-03-27 03:42:20.1774582940
Combinatory Explanation for $ \sum_{k=1}^{100} {{100} \choose {k}}2^k=3^{100}-1 $
86 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in COMBINATORICS
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