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**Question**

Let A and B be finite sets of cardinalities m and n, respectively. You may assume m and n are positive integers but you may not assume any ordering of m and n. 1. How many relations are there from the set A to set B?

**comments**

I'm to arrive at a solution to this question

**logically**, you know, show all the logic, but I'm not sure where to begin. I took a logic course about a year and a half ago and I admit I'm a bit rusty on it.

I purchased Velleman's How to Prove It and have been working through it in order to get up to speed; should I keep studying this book or look somewhere else?