Homework Help: Math

Posted by Anna on Tuesday, February 12, 2013 at 11:28pm.

How many distinct numbers greater and equal to 100 and smaller than 3000 can be formed using digits 0,1,2,3,4, without repetition of digits?

Math - Reiny, Tuesday, February 12, 2013 at 11:52pm
number of 3 digit numbers , must start with 1,2,3,or4
=4x4x3 = 48

number of 4 digit numbers ,must start with 1 or 2
= 2x4x3x2 = 48

total = 96

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