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Mathematics
Problem
A function
f
:
A
→
B
f:A\to B
f
:
A
→
B
is surjective but not injective. If
∣
A
∣
=
5
|A|=5
∣
A
∣
=
5
, which of the following could be
∣
B
∣
|B|
∣
B
∣
? a)
6
6
6
b)
5
5
5
c)
2
2
2
d)
8
8
8
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