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: how many positive integers less than 20 can be expressed as the sum of a positive multiple of 2 and a positive multiple of 3 ?
[A]: 14


[Q]: Problem: the length of the bridge , which a train 130 metres long and travelling at 45 km / hr can cross in 30 seconds , is
[A]:
245 m