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

[EX Q]: Problem: what is the probability of getting a queen or spade from a set of cards ?
[EX A]: 4 / 13

[EX Q]: Problem: if 1.5 cm of a pencil is purple , 0.5 cm of the remaining is black and the remaining 2 cm is blue , what is the total length of the pencil ?
[EX A]: 4 cm

[EX Q]: Problem: a train 150 m long is running at a speed of 68 kmph . how long does it take to pass a man who is running at 8 kmph in the same direction as the train ?
[EX A]:
9 sec