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ROWS COLUMNS DIAGONALS QUADRANTS
8+11+a+1=82 8+b+3+10=82 8+2+9+d=82 8+11+b+2=82
b+2+7+12=82 11+2+c+5=82 10+c+7+1=82 a+1+7+12=82
3+c+9+6=82 a+7+9+4=82 3+c+10+5=82
10+5+4+d=82 1+12+6+d=82 9+6+4+d=82
CENTRAL QUADRANTS Four Corners
2+7+c+9=82 8+10+d+1=82
Solve for a,b,c and d. Time yourself 🕰 5munites
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