.)six bells commence tolling together and toll at intervals of 3 sec, 6 sec, 9 sec, 12 sec, 15 sec and 18 sec respectively. if all bells rang together at 9 o'cl

.)Six bells commence tolling together and toll at intervals of 3 sec, 6 sec, 9 sec, 12 sec, 15 sec and 18 sec respectively. If all bells rang together at 9 o'clock, for how many more times will they ring together till 9:32? (a) 4 (b) 10 (d) 15 (c) 11