The number of objective functions from a set A to itself when A contai

1.	The number of objective functions from a set A to itself when A contains 106 elements, is
A.	106
B.	\[{{(106)}^{2}}\]
C.	\[(106)!\]
D.	\[{{2}^{106}}\]
Answer» D. \[{{2}^{106}}\]

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The number of objective functions from a set A to itself when A contains 106 elements, is

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