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

Problem: a 10 % stock yields 8 % . the market value of the stock is :
rs . 125

Problem: how many numbers are divisible by both 2 and 3 up to 300 ?
50

Problem: john has 10 pairs of matched socks . if he loses 13 individual socks , what is the greatest number of pairs of matched socks he can have left ?

3