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

[EX Q]: Problem: what is the value of x ^ 2 yz − xyz ^ 2 , if x = − 2 , y = 1 , and z = 1 ?
[EX A]: 6

[EX Q]: Problem: two numbers are in the ratio 3 : 5 . if 9 be subtracted from each , they are in the ratio of 1 : 2 . the first number is :
[EX A]: a ) 27

[EX Q]: Problem: here 10 programmers , type 10 lines within 10 minutes then 60 lines can type within 60 minutes . how many programmers are needed ?
[EX A]:
60