Five bells commence tolling together and toll at intervals of 2, 4, 9, – McqOptions

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1.	Five bells commence tolling together and toll at intervals of 2, 4, 9, 12 and 15 seconds respectively. In 45 minutes, how many times do they toll together?
A.	10
B.	16
C.	15
D.	8
Answer» C. 15

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