(Irrational Numbers LC)

Which of the following numbers are irrational?

negative eight and 2183 ten thousandths, one third pi, the cube root of twenty-five, and nine plus the square root of four

−8.2183 and nine plus the square root of four
−8.2183 and one third pi
one third pi and the cube root of twenty-five
the cube root of twenty-five and nine plus the square root of four