What is the unit digit of 1! + 2! + 3! + …. + 88!?
a) 3
b) 1
c) 5
d) 6
e) 0
Answer and explanation:
The correct answer is a.3 . All numbers 5! and above will have a zero at the end.
b) 1
c) 5
d) 6
e) 0
Answer and explanation:
The correct answer is a.3 . All numbers 5! and above will have a zero at the end.
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