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.Unless otherwise noted, all sets in this module are finite. Prove the following statements! 1. There...

.Unless otherwise noted, all sets in this module are finite. Prove the following statements!

1. There is a bijection from the positive odd numbers to the integers divisible by 3.

2. There is an injection f : Q→N.

3. If f : N→R is a function, then it is not surjective.

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