Question
Prove sum of first n natural numbers is n(n+1)/2 (induction).
Answer: Base n=1 true. Assume for k. Then sum to k+1 = k(k+1)/2+(k+1)=(k+1)(k+2)/2. Hence proved.
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Question
Answer: Base n=1 true. Assume for k. Then sum to k+1 = k(k+1)/2+(k+1)=(k+1)(k+2)/2. Hence proved.
Question
Answer: Base n=1 true. Assume for k. Then sum to k+1 = k(k+1)/2+(k+1)=(k+1)(k+2)/2. Hence proved.