(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

My intro to Proofs class usesHow to Prove It, 2nd edition by Velleman.

I would like a couple other references on introduction to proofs. What do you recommend? I don't mind spending hours agonizing over proofs, but I'd like to be able to check my work with answers somewhere.

Thanks in advance!

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# Introduction to Proofs texts/resources?

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