instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: two trains , a and b , started simultaneously from opposite ends of a 125 - mile route and traveled toward each other on parallel tracks . train a , traveling at a constant rate , completed the 125 - mile trip in 12 hours ; train b , traveling at a constant rate , completed the 125 - mile trip in 8 hours . how many miles had train a traveled when it met train b ?
answer:
5


question:
Problem: a , b , c , d , e , f , g , h sitting in a row what is the probability that a , b , c sitting together ?
answer:
3 / 28


question:
Problem: the chance of rain on any given day in tel - aviv is 50 % . what is the probability z that it rained in tel - aviv on exactly 4 out of 6 randomly chosen days ?
answer:

15 / 64