Question

Which of the following arrow diagrams shows the one-to-one correspondence between set a and set b

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#nonsense will be reported



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Answer 1

Explanation:

In set a, every element in the domain has only 1 image in the range. This is called a one-to-one correspondence.

However in set b, there is a many-to-one correspondence as more than 1 element in the domain has the same image.