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Magic Square With Minimal Information

Algebra Level 3

In the above magic square, all the rows, columns and diagonals each sum up to 6.

What is the entry of the square shaded in yellow?

-2 -1 0 Not enough information

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Excel in math and science

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It's hard to learn from lectures and videos

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including olympiad champions, researchers, and professionals.

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by Chung Kevin

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