How many times does a clock strike in a day if it strikes the times on each hour and once on each 1/2 hour

Question

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Answer 1

2(1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12)        that's the hours

plus

24           that's the half-hours