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I'm searching for a good book or web page that has a good amount of problems and their solutions, at undergraduate level, of divisibility, inequalities, induction, etc.

Thanks in advance

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Problem Solving Strategies by Arthur Engel.

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Thanks, i've seen it and it looks like it has a lot of problems and their solutions. But i will wait till someone propose better resources to that specific subjects, if there are any – user6675 Feb 6 '11 at 21:30

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