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UP TGT Mathematics Set Theory Test Series - Part 5

If |A|=4 and |B|=2, how many functions A→B exist?

Type: MCQ • Marks: 1
If |A|=4 and |B|=2, how many functions A→B exist?
Options
A. 24
B. 6
C. 8
D. 16
Explanation
There are 2 choices for each of 4 inputs, so 2⁴=16.
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