### Brain Teasers

# It takes a clock

It takes a clock 2 seconds to strike 2 o`clock.

How long will it take to strike 3 o`clock?

How long will it take to strike 3 o`clock?

### Answer

It will take 4 seconds.Since the clock strikes 2 o`clock in 2 seconds, these two seconds are the interval between two strikes. Between the first and the third strike there are two intervals, so it will be 4 seconds.

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## Comments

Surely if its just struck two o clock it will take an hour for it to strike 3 o clock? :p

That was funny. I agree. It would take the hour for the clock to strike 3. Good one though.

Two people either willfully or unconciously mis-reading the question! Quite easy if you think about it

i don't get it. wouldn't the two seconds include the actual chiming?

I agree with all these comments, actually. My first answer was 1 hour... since you'd have to wait until it was 30.

My second answer was actually three seconds, with this reasoning:

2 chimes took 2 seconds. That mean the first chime started to ring on the hour and rang for 1 second, the second chime started at 1 second past the hour and rang for 1 second. So, 1 second per ring... 3 seconds.

Good idea for a teaser, just open to interpretation a bit.

My second answer was actually three seconds, with this reasoning:

2 chimes took 2 seconds. That mean the first chime started to ring on the hour and rang for 1 second, the second chime started at 1 second past the hour and rang for 1 second. So, 1 second per ring... 3 seconds.

Good idea for a teaser, just open to interpretation a bit.

The teaser is completely correct, if you assume that it takes NO time for the clock to chime and you are measuring the gap only...

If you had an imaginary clock that could chime for zero seconds O_o.. there would be a 2 second gap between the first and second chimes (then it would take 4 seconds to chime 3 times).

If it took half a second for the clock chime (sound).. that would leave a 1 second gap between chimes (then it would take 3.5seconds to chime 3 times).

However.. IF the chime (sound) took 1 second, there would be NO gap at all (so it would take 3seconds to chime 3 times).

(hmmm verbosity alert -_-;)

If you had an imaginary clock that could chime for zero seconds O_o.. there would be a 2 second gap between the first and second chimes (then it would take 4 seconds to chime 3 times).

If it took half a second for the clock chime (sound).. that would leave a 1 second gap between chimes (then it would take 3.5seconds to chime 3 times).

However.. IF the chime (sound) took 1 second, there would be NO gap at all (so it would take 3seconds to chime 3 times).

(hmmm verbosity alert -_-;)

Yeah the teaser is right but I also think it's dull and stupid

noooo finaly 1 got me lol nice job

I think you just need to add a point of reference....stating where it's starting before moving to 2....

it could have started at 12....which is my assumption....then 12 to 1....1 to 2.....that's 2 seconds....1 second per interval.....

In fact...the more I think about it, the more I disagree with this being solvable......you WOULD need a point of reference to obtain a logical answer....otherwise it's a trick.

it could have started at 12....which is my assumption....then 12 to 1....1 to 2.....that's 2 seconds....1 second per interval.....

In fact...the more I think about it, the more I disagree with this being solvable......you WOULD need a point of reference to obtain a logical answer....otherwise it's a trick.

I also took the time of the chime into account, particularly because chimes on clocks tend to resonate. (I also thought of the "hour" answer, but the question really didn't ask how long from NOW, but how long WHEN IT HAPPENS). Nice trick, though.

im not gonna get into a long discussion about it. im gonna say straight up that i just didnt get it

According to the logic of the answer, it takes zero seconds to chime 1 o'clock. Does that seem reasonable?

Well if you stand with a stopwatch at the foot of the clock and press start when you hear it strike 'ONE', when are you going to press stop? Let's put it this way if you are driving in your car and it takes 2 seconds to pass 2 power poles then it would take 4 seconds to pass 3 power poles and you can't time the interval required to pass one pole.

Yeah, once I clicked the answer, I realized what your point of view is on the problem. I was thinking an hour too.

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