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CBSE Notes 2011-2012

Two alarm clocks ring their alarms at regular intervals of 50 seconds and 48 seconds. If they first ...

Multiple choice question

Two alarm clocks ring their alarms at regular intervals of 50 seconds and 48 seconds. If they first beep together at 12 noon, at what time will they beep again for the first time ?

unknown

12.20 pm

unknown

12.12 pm

unknown

12.11pm

unknown

none of these