Correct Answer : B
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?
Let b be a positive integer and a = b2 - b. If b3 = 4, then a2 - 2a is divisible by:
In some code, letters a, b, c, d and e represents numbers 2, 4, 5, 6 and 10. We just don't know which letter represents which number. Consider the following relationships:
i) a + c = e,
ii) b - d = d and
iii) e + a = b
Which statement below is true?