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

[Q]: Problem: the sum of the even numbers between 1 and n is 89 * 90 , where n is an odd number , then n = ?
[A]: 179


[Q]: Problem: what is the value of x ^ 2 yz − xyz ^ 2 , if x = − 2 , y = 1 , and z = 1 ?
[A]: 6


[Q]: Problem: three 6 faced dice are thrown together . the probability that exactly two dice show the same number on them is
[A]:
5 / 12