Question

Take a table clock, remove its cell and find out at what time the clock makes an angle of 90°
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Answer 1

Answer:

clock makes 90; 12 times per 12 hours

1. 00:15
2. 1:20
3. 2:25
4. 3:30
5. 4:35
6. 5:40
7. 6:45
8. 7:50
9. 8:55
10. 9:00
11. 10:05
12. 11:10