ZOOM . zingers | PBS Kids

From Amber, age 13 of ME:

Say you have a clock that chimes. Every hour, it chimes the number that the hour is, and every half an hour it chimes once. In which hour during the day will it chime three times but only once each time?

Answer below...

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Between 12:30 and 1:30pm. It will chime once at 12:30,
once at 1:00, and once at 1:30.

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