Turn in Friday, 9/4

Prove by induction 1+2+3+ ... + n = n*(n+1)/2

1.5: For this problem, write your function in C++ and compile and test it. Further, include a written proof by induction that your algorithm will return the correct value for all positive integers. Turn in a printout of your source code and your written proof.

1.8 a, b

1.10

1.12

Explain why all horses are not necessarily brown.