Question 242497: 5. If D = {w, h, y} and E = {n, o, t}then answer the following:
(a) How many possible one-to-one correspondences are there between sets D and E?
Found 2 solutions by stanbon, solver91311:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! If D = {w, h, y} and E = {n, o, t}then answer the following:
(a)How many possible one-to-one correspondences are there between sets D and E?
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With w you can associate 3 letters
With h you can associate 2 letters
With y you can associate 1 letter.
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# of one-to-one is 3*2*1 = 6
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Cheers,
Stan H.
Answer by solver91311(24713)  (Show Source):
You can put this solution on YOUR website!
There are three ways to make w correspond to an element of E. For each of those ways there are two ways to make h correspond to one of the elements that remain after the w correspondence is chosen. Hence, that is 6 ways to make the first two elements correspond. Then for each of those ways there is one way to make y correspond after both w and h correspondences have been chosen.
John
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