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A bank PIN is a string of four digits, each digit 0-9. How many choices are there for a PIN if the last digit must be odd?

A) 5⋅3^10
B) 10^4
C) 4^10
D) 5⋅10^3

User Integer
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1 Answer

6 votes

Answer:

D.

Explanation:

User Kiltek
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