A light blinks after every 3 sec, another light blinks after every 5 sec and the third one blinks after every 16 sec. How many times do they blink together in half an hour.

Aptitude and Reasoning MCQ Questions with Solutions

A light blinks after every 3 sec, another light blinks after every 5 sec and the third one blinks after every 16 sec. How many times do they blink together in half an hour.?

A) 7 times
B) 4 times
C) 240 times
D) 8 times

Answer & Description:

A) 7 times

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