SOLUTION: 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?

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(52787) (Show Source): You can put this solution on YOUR website!
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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?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 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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