Number Puzzle #175
find out the missing number
2 3 1 2
3 4 4 5
5 6 6 7
30 43 51 ?
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Answer by Paramjeet Dubey
For each column
-2*2+3*3+5*5=30,
-3*3+4*4+6*6=43,
-1*1+4*4+6*6=51,
-2*2+5*5+7*7=70
