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The number of constant functions that ca...

The number of constant functions that can be defined from the set `A={a_(1), a_(2), a_(3)…, a_(n)}` to the set `B={b_(1), b_(2),….b_(n)}`is

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The correct Answer is:
`1/3(3^n-3.2^n+3)=3^(n-1)+1`
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