Give the output of the following Math functions: (i) Math.ceil(4.2) (ii) Math.abs(-4)

(i) 5.0 (ii) 4

(i) ceil() always rounds UP to the next whole number, however small the fraction, and it returns a double — so the answer is 5.0, not 5. The decimal point carries the mark. (ii) abs() removes the sign. Here the argument is the INT -4, and Math.abs() has an int version that returns an int, so the answer is 4 without a decimal point. Had the argument been -4.0, the answer would have been 4.0. That contrast — one answer with a decimal point and one without — is exactly what the question is testing.