378. Is it that simple? Before you is a simple magic square, in which the sums of the numbers in any row, any column, and on the main diagonals are equal to 72. The puzzle con-

| 27 | 20 | 25 |
| :--- | :--- | :--- |
| 22 | 24 | 26 |
| 23 | 28 | 21 |

sists in transforming it into a multiplicative magic square, in which the products of the numbers in any row, any column, or on any of the major diagonals are the same. You are not allowed to swap the numbers, add anything to them, or use any arithmetic signs! You can only move the digits within one cell. Thus, instead of 27, you can take 72.

If you manage to find the "key" to the solution, the task will turn out to be incredibly simple. Otherwise, solving the puzzle is almost impossible.
378. To solve the puzzle, you just need to move the right digit up in each cell to get powers of 2. Revealing these powers, you will find that the resulting square meets the required condition with a product of 4096. Of course, anyone familiar with arithmetic knows that 20 equals 1.