Question: 1. Prove: 1 + 2 + 3 + - + n = (n + 1) using lattice paths. 1+2+3++n= n+ 2 2. Solve a

1. Prove: 1 + 2 + 3 + - + n =

1. Prove: 1 + 2 + 3 + - + n = (n + 1) using lattice paths. 1+2+3++n= n+ 2 2. Solve a = 2n+1 - 1 with a = 1.

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