UP TGT Mathematics Set Theory Test Series - Part 5

If a finite function f:A→B is injective and |A|=|B|, then f is

Type: MCQ • Marks: 1
If a finite function f:A→B is injective and |A|=|B|, then f is
Options
A. surjective as well
B. constant
C. not a function
D. never surjective
Explanation
For finite sets of equal size, an injection uses every codomain element.
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