Question 23
Fill-in the numbers 1, 2, 3, 4, 6, 9, 12, 18, and 36 into each of the unit squares
exactly once on the grid below, so that the product of the three numbers on each
horizontal, vertical and diagonal lines are all equal. Which number must be filled
in the unit square marked with “☆”?
☆
exactly once on the grid below, so that the product of the three numbers on each
horizontal, vertical and diagonal lines are all equal. Which number must be filled
in the unit square marked with “☆”?
☆