MCQOPTIONS
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| 1. |
Four bells begin to toll together respectively at the intervals of 8, 10, 12 and 16 seconds. After how many seconds will they toll together again? |
| A. | 246 seconds |
| B. | 242 seconds |
| C. | 240 seconds |
| D. | 243 seconds |
| Answer» D. 243 seconds | |