TASK DEFINITION: The task is to generate the correct answer for a given math problem.
PROBLEM: Problem: a can do a work in 15 days and b in 20 days . if they work on it together for 5 days , then the fraction of the work that is left is

SOLUTION: 5 / 12

PROBLEM: Problem: a man have 8 t - shirt and some pant . he can dress in 72 ways . then tell me the no . of pant that man have .

SOLUTION: 9

PROBLEM: Problem: the average of first 10 odd numbers is ?

SOLUTION:
10