1.

Six bells commence tolling together and toll at intervals of 3, 6, 9, 12, 15, 18 seconds respectively. In 1 hr. 30 mins., how many times do they toll together?(3 points) ◯ (a)31 ◯ (b)28 ◯ (c) 29 ◯ (d)32​

Answer»

the ANSWER of this QUESTION is 28



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