

MCQOPTIONS
Saved Bookmarks
1. |
Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together ? |
A. | 4 |
B. | 10 |
C. | 15 |
D. | 16 |
Answer» E. | |