# Number Grid

Logic Level 3

Arrange the numbers $$1-10$$ without repetition to replace the alphabets in the grid such that the sum of the numbers in the top row, bottom row, left column and right column is $$18$$ each.

Among the solutions that exist, the alphabets $$E$$ and $$F$$ can each have only one value, interchangeable between them.

Find $$E\times F$$

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