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Lesson 2

What numbers go in the two colored squares?

The middle box is missing 4 and 9.   The number 9 cannot go into the yellow square because the other 9 in that row.
So the 4 goes into the yellow square and the 9 goes into the aqua colored square.  Look at what numbers are missing in a
box and see if they are in those rows or columns.

NEXT LESSON 3