The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: what is the range of all the roots of | x ^ 2 - 4 | = x ?
[EX A]: 3

[EX Q]: Problem: the size of a television screen is given as the length of the screen ' s diagonal . if the screens were flat , then the area of a square 19 - inch screen would be how many square inches greater than the area of a square 17 - inch screen ?
[EX A]: 36

[EX Q]: Problem: the ratio of number of boys and girls in a school is 3 : 2 . if there are 100 students in the school , find the number of girls in the school ?
[EX A]:
40