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

[Q]: Problem: a large box contains 20 small boxes and each small box contains 32 chocolate bars . how many chocolate bars are in the large box ?
[A]: e ) 64


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


[Q]: Problem: a train 90 m long is running with a speed of 60 km / hr . in what time will it pass a man who is running at 6 km / hr in the direction opposite to that in which the train is going ?
[A]:
5