एक घड़ी एक बजे एक बार बजती है और दो बजे दो बार तो 24 घंटे मैं वह कितनी बार बजेगी ?
Answers
Answered by
2
in 1hr=1
in 2hr=2
in 3hr=3
and so on
we see it forms an AP
1,2,3.......24
Sn=n/2(a+l)
=24/2(25)
25*12=300
therefore it will ring 300 times
Answered by
1
400 times it will rang
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