Question: 10. [10 Points] Show that for any integer n1, (a) i=0n(ni)=2n. (Hint: Consider the binomial expansion with a=b=1.) (b) (n+1k)=(nk)+(nk1)

10. [10 Points] Show that for any integer n1, (a) i=0n(ni)=2n.

10. [10 Points] Show that for any integer n1, (a) i=0n(ni)=2n. (Hint: Consider the binomial expansion with a=b=1.) (b) (n+1k)=(nk)+(nk1)

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