There are 12 numbers around a clock face, and each interval between the numbers is 5 minutes, so there are 12 × 5 = 60 minutes ... 15 minutes. In half an hour there are 30 minutes.
There are 12 numbers around a clock face, and each interval between the numbers is 5 minutes, so there are 12 × 5 = 60 minutes ... 15 minutes. In half an hour there are 30 minutes.
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