[" 7."4" Bells toll together at "9.00am" .They toll after "7,8,11" and "12" seconds respectively.How "],[" many times will they toll together again in the next "3" hours? "]

4bells toll together at 9.00 a.m.They toll after 7,8,11 and 12 seconds respectively.How many xx will they toll together again in the next 3 hours?

6 bells commence tolling together and toll of intervals are 2, 4, 6, 8, 10 and 12 s, respectively. In 1 h, how many times, do they toll together?

Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. After how many seconds will they toll together again?

Five bells begins to toll together and toll respectively at intervals 6,7,8,9 and 12 seconds. How many times will they toll together in one hour, excluding the one at the start?

Five bells begins to toll together and toll respectively at intervals 6,7,8,9 and 12 seconds. How many times will they toll together in one hour, excluding the one at the start?