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Number of Elements in a Cartesian Product

The number of...

Question

The number of functions from an $m$ element set to an $n$ element set is

A

m + n

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B

m^{n}

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C

n^{m}

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D

m * n

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Solution

The correct option is C $n^{m}$
The number of functions from an $m$ element set to an $n$ element set is $n^{m}$ .

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