Question 780063
The tens digits is half the hundreds digit.
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That narrows it down to these four types of numbers

21_, 42_, 63_, 84_

We only need to fill in the blank for the units digit.
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 The sum of the digits is 14.
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21_ is ruled out because you can't put 11 in the right blank.
63_ is ruled out because you can't put 5 in the blank, because
that would make it an odd number 645.

So it's either 42_ or 84_

To make the sum of the digits be 14, it could either be 
428 or 842

Two possible answers.

Edwin</pre>