Three digits number 2

Find the number of all three-digit positive integers that can be put together from digits 1,2,3,4 and which are subject to the same time has the following conditions: on one positions is one of the numbers 1,3,4, on the place of hundreds 4 or 2.


n =  24


n=2 4 3=24n=2 \cdot \ 4 \cdot \ 3=24

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