Question 1031779: A 4-digit pin number is to be created using the digits 0 through 9. The first digit must be a 5 or an 8, and the last digit cannot be 0. How many pin numbers can be created?
Answer by ikleyn(52879)   (Show Source):
You can put this solution on YOUR website! .
A 4-digit pin number is to be created using the digits 0 through 9. The first digit must be a 5 or an 8,
and the last digit cannot be 0. How many pin numbers can be created?
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2 options in the first position,
10 options in position 2,
10 options in position 3, and
9 options in position 4.
In total, 2*10*10*9 = 1800 pin numbers can be created.
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