Arrange the digits 2, 3, 4, 5, 6 and 7 in a 2×3 array (2 rows, 3 columns) so that the product of the two 3-digit numbers in each
row is equal to the product of the three 2-digit numbers in each column. What is the sum of the 3-digit numbers in the rows? I solved this problem (999) but I need help mathematically proving it is the only solution possible.
The answer would be C. Perpendicular. This is because perpendicular lines make a 90 degree angle, and this is show by the partial sqaure. I hope this helps!
