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MingWen · Answer 1 · 2018-01-12T03:34:17+0000

7

Clocks can display up to the number 59 (60 minutes in an hour). If you list all of the perfect squares that are under 59, you will find that there is 7 of them: 1, 4, 9, 16, 25, 36, and 49.

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