If 7×7 = 12 puzzle
744.3K Views
10
take the number, subtract 1 and multiply by 2
7 => 6 => 12
5 => 4 => 8
3 => 2 => 4
2 => 1 => 2
6 => 5 => 10
10
Add both numbers and subtract 2.
Your Answer
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