Algerbra 2/Trigonometry - January 2011

23.

25 A four-digit serial number is to be created from the digits 0 through 9. How many of these serial numbers can be created if 0 can not be the first digit, no digit may be repeated, and the last digit must be 5?

(1) 448     (3) 2,240
(2) 504    (4) 2,520 

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