A mysterious desk clock named Time Cube tells time through three moving triangles.
Guess why there are three triangles. Yes, you are right, one for the hour, one for the minutes and the third one for the seconds.
Now how will you read time?
It is easy if you closely look at it. Do you see a straight line at bottom? That is the reference line. The triangles have numbers on their edges. The numbers adjacent to the reference line tell you the current time.
For example, this position is equivalent to 6:20.
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Now a tricky question: How many times do you think these triangles align to become an actual cube in a day?
Your choices are:
a. 12
b. 6
c. 24
d. 63
Answer is:
b. 6
Explanation:
The bigger triangle is a 12hr dial. This means in a 12hr day, the corners align 3 times. You may be thinking that 12/3 = 4, so it should be 4. Well, it is not. Because 12hr position and zero are the same. i.e, there will be only six occasions in a day the perfect alignment occurs.
00:00 AM, 04:00 AM, 08:00 AM, 12:00 AM, 04:00 PM, 08:00PM => 12:00PM is same as 00:00 AM.
Now you may ask what about the minute hand and second hand. Well, the perfect alignment only occurs at 00 minute and 00 seconds. At all other times, the bigger triangles: minute’s triangle and hour’s triangle would have advanced slightly thus making it impossible to have a perfect alignment.
Source: Technabob
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