Wednesday
September 17, 2014

Homework Help: math

Posted by Kyle on Monday, July 12, 2010 at 8:15pm.

How many different positive four-digit integers can be formed if the first digit must be 2, the last digit cannot be 0, and digits may be repeated?

a) 336
b) 900
c) 1000
d) 9000
e) 10000

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