1.

Harish switched on a bulb at 01∶23∶44 hours and switched it off on the same day at 11∶14∶38 hours. For how long was the bulb in switched-on mode?

A. 12 hours 40 mins 06 secs
B. 10 hours 09 mins 06 secs
C. 09 hours 09 mins 06 secs
D. 09 hours 50 mins 54 secs
Answer» E.


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