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

[Q]: Problem: if p represents the product of the first 16 positive integers , then p is not a multiple of
[A]: 5

[Q]: Problem: how many liters of a 40 % iodine solution need to be mixed with 35 liters of a 20 % iodine solution to create a 32 % iodine solution ?
[A]: 102

[Q]: Problem: in what time will two trains cross each other completely , which are running on the same parallel lines in opposite directions , each train running with a speed of 90 kmph being 160 m and 140 m in length respectively ?
[A]:
6.0 sec