MCQOPTIONS
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| 1. |
Four bells begin to toll together at intervals of 5, 6, 8 and 12 seconds respectively. How many times will they toll together in an hour excluding the one at the start? |
| A. | 30 |
| B. | 20 |
| C. | 10 |
| D. | 16 |
| Answer» B. 20 | |