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

[Q]: Problem: in how many no . between 10 and 30 exactly two of the digits is 2 ?
[A]: 1


[Q]: Problem: if | 5 x - 20 | = 100 , then find the sum of the values of x ?
[A]: 8


[Q]: Problem: a train running at the speed of 70 km / hr crosses a pole in 9 sec . what is the length of the train ?
[A]:
175 m