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Counting & ProbabilityMediumIdentities and Techniques, Proved

Identities and Techniques, Proved · Medium problem

Find (50)+(61)+(72)+(83)+(94)+(105)\displaystyle\binom{5}{0}+\binom{6}{1}+\binom{7}{2}+\binom{8}{3}+\binom{9}{4}+\binom{10}{5}.