If a clock-tower strikes once at one o'clock, twice at two o'clock, thrice at three o'clock, then how many times does the clock strike altogether in 74 hours?
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The answer is 468 times .
A tower clock has 12 hour system so
By formula n(n+1)/2 we get 12(12+1)/2=78
Then for 1 day 78*2=156
For three days that is 78 hrs 156 *3=468.
By formula n(n+1)/2 we get 12(12+1)/2=78
Then for 1 day 78*2=156
For three days that is 78 hrs 156 *3=468.
Rhibhu:
exactly Saprativa
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