What is ¾ divided by ¼?
What is √144?
For x greater than or equal to zero and less than or equal to 2 π, sin x and cos x are both decreasing on the intervals.
A perfect square is an integer that is the square of an integer. Suppose that m and n are positive integers such that mn > 15. If 15mn is a perfect square,what is the least possible value of mn ?