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The 27 numbers
created by
PaNikos
18
liked this
38
solved this
Show hint
take groups of 9 numbers
Show answer
there are three squares 3x3
if you add the numbers of its one they are equal to 37
1+7+8+6+2+4+1+3+5=37
so 2+4+2+3+5+3+9+?+8=37 => ?=1
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18
Solved
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