instruction:
The task is to generate the correct answer for a given math problem.
question:
Problem: in how many no . between 10 and 30 exactly two of the digits is 2 ?
answer:
1

question:
Problem: the h . c . f of two numbers is 23 and the other two factors of their l . c . m are 14 and 15 . the larger of the two numbers is :
answer:
345

question:
Problem: the speed of the boat in still water in 12 kmph . it can travel downstream through 54 kms in 3 hrs . in what time would it cover the same distance upstream ?
answer:
9 hour