Give the output of the following: Math.sqrt(Math.max(9, 16))

4.0

Work from the inside out. Math.max(9, 16) returns the larger value, 16. Then Math.sqrt(16) gives 4.0. The decimal point matters: Math.sqrt() always returns a double, so the answer is 4.0 and not 4. Writing 4 would lose the mark. Note also that max() with two int arguments returns an int, but the moment it is passed to sqrt() the value is widened to a double.