Question 1153221
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(1) The first digit has to be either 3, 5, or 8 (the 3-digit number has to be greater than 300):<pre>
3AB
5AB
8AB<br></pre>
(2) The last digit has to be 0 or 8 (the 3-digit number must be even); and no digit can be used twice:<pre>
3A0  3A8
5A0  5A8
8A0<br></pre>
For each of those combinations of first and last digits, the middle digit can be any of the three remaining digits:<pre>
310  350  380    308  318  358
510  530  580    508  518  538
810  830  850</pre>
ANSWER: 15 different 3-digit even numbers greater than 300 with no digits repeated<br>