- A300
- B144
- C156
- D78
Step-by-Step Solution
Every 12 hours it strikes 1 + 2 + … + 12 = 78 times, whatever time we start from. A whole day has two such cycles: . (78 is only half a day; 300 adds one strike per minute-mark.)
Answer: C) 156
This clock strikes only on the hour, once for each hour number. Starting just after the time shown, how many strikes does it make before the same time the next day?
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