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

Problem: how many zeroes are there at the end of the number n , if n = 100 ! + 200 ! ?
2

Problem: a and b together can complete work in 6 days . a alone starts working and leaves it after working for 4 days completing only half of the work . in how many days it can be completed if the remaining job is undertaken by b ?
12

Problem: what is the unit digit of ( 6 ! * 3 ! / 3 ! * 4 ! ) ?

0