Answer :

Trim
6 x 7 = 42
6 x 6 = 36

So the range is 37, 38, 39, 40, 41

The only one where the digits add up to 12 is 39

Answer 39
AndyBryer
6*7=42
6*6=36
Therefore the possibilities are 37, 38, 39, 40 and 41
3+7=10
3+8=11
3+9=12
4+0=4
4+1=5
Therefore your answer is 39

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