Quantitative Aptitude Test 103

Test # 103


1.
A red light flashes 3 times per minute and a green light flashes 5 times in two minutes at regular intervals. If both lights start flashing at the same time, how many times do they flash together in each hour?

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Quantitative Aptitude
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come out of the blue
to appear suddenly (as if from the sky)
My friend's idea for making money came out of the blue.

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