Four bulbs light up at the interval of 2, 3, 4 and 5 minutes respectiv – McqOptions

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1.	Four bulbs light up at the interval of 2, 3, 4 and 5 minutes respectively at some moment. They are lit up together at 8:00 pm. At what time will all bulbs light up together?
A.	Night 8:45
B.	Night 9:45
C.	Night 8:30
D.	Night 9:00
Answer» E.

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