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: p , q and r together earn rs . 1710 in 9 days . p and r can earn rs . 600 in 5 days . q and r in 7 days can earn rs . 910 . how much amount does r can earn per day ?
[EX A]: s . 60

[EX Q]: Problem: if [ x ] is the greatest integer less than or equal to x , what is the value of [ - 2.6 ] + [ 1.4 ] + [ 2.7 ] ?
[EX A]:
0