Question

Deductive reasoning can come in handy for solving puzzles. In this puzzle, each letter represents a different digit. What does the O represent?
O+O=E
O x O=E
M x M=OM

Answer 1

O is 2 as
2+2 =4
and
2x2 = 4

so E=4

M = 5 because

5x5 = 25 i.e.
MxM=OM

Answer 2

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Answer 3

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