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Google Interview Riddle - 23 September

How many times do a clock's hands overlap in a day ?

1. the answer is 22 times in a day

2. After ever 1:05 hrs (and some seconds) clock's hands overlap. So there are 22 overlaps. Ignoring the start and end overlapping.

Just hour & minute hands
5 years ago

Its not 24
5 years ago

I repeat, it's NOT 24
5 years ago

The hands overlap every 12/11 hour. So here are the times that they overlap:

1. midnight
2. 1 + 1/11 am
3. 2 + 2/11 am
4. 3 + 3/11 am
5. 4 + 4/11 am
6. 5 + 5/11 am
7. 6 + 6/11 am
8. 7 + 7/11 am
9. 8 + 8/11 am
10. 9 + 9/11 am
11. 10 + 10/11 am
12. noon
13. 1 + 1/11 pm
14. 2 + 2/11 pm
15. 3 + 3/11 pm
16. 4 + 4/11 pm
17. 5 + 5/11 pm
18. 6 + 6/11 pm
19. 7 + 7/11 pm
20. 8 + 8/11 pm
21. 9 + 9/11 pm
22. 10 + 10/11 pm

If midnight is considered part of both days, then the answer is 23 times.Otherwise the answer is 22 times.

4. it is 22 times in a day!!

5. 22 times a day

6. The clocks hands are placed one on top of the other so there is ALWAYS overlap.

7. This comment has been removed by the author.

1. fuck you......asshole!!

8. never seen a clock with hands

9. 22 TIMES

AM
12:00
01:05
02:10
03:15
04:20
05:25
06:30
07:35
08:40
09:45
10:50
11:55

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

10. i think its 24 a day