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I need help solving this problem, please help!
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Prove that the sum from k=0 to k=n of the binomial coefficients C(n,k) is 2^n. Hint: consider the binomial expansion (x+y)^n and set x and y to convenient or clever values.
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Prove that the sum from k=0 to k=n of the binomial coefficients C(n,k) is 2^n. Hint: consider the binomial expansion (x+y)^n and set x and y to convenient or clever values.
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