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SOF IMO · Mirror and Water Images · Quiz

Mirror and Water Images — quick quiz

5 real SOF IMO questions on Mirror and Water Images. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

HARD

A sheet of paper has the number '2538' written on it. First, it is held in front of a vertical mirror and the mirror image is noted. Then, the same original sheet is held above still water and the water image is noted. How many digits will appear the same in both the mirror image and the water image?