Puzzler answer

If we work on the units column first, we find that only 4x9 will produce a valid figure for the bottom line (6). Moving on from there, we know that the thousands...

If we work on the units column first, we find that only 4x9 will produce a valid figure for the bottom line (6). Moving on from there, we know that the thousands digit will have to be 2, and the rest is easy enough.

Puzzler answer

Bonus puzzle

If you look at the equation in a slightly different way:

n/n=n/12+n/6

the answer 4 becomes immediately apparent




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