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Let S be the set of all functions from the set A to the set A. If n(A) = k then n(S) is
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k!
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kk
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2k – 1
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Correct option is B
Each element of the set A can be given the image in the set A in k ways.∴ the required number of functions, i.e.,n(S)=k×k×…(k times )=kk.Similar Questions
If then equal to
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