Asked by rohit
The probability that Katarina will correctly solve a given Brilliant math problem is 1/8. The probability that Layla will solve the same problem correctly is 1/12. The probability that they will give the same incorrect numerical result is 1/1001. Suppose Katarina and Layla solve a Brilliant math problem independently and get the same result. The probability that they get the correct answer, given that they got the same result, can be written as a/b, where a and b are coprime positive integers. Find a+b.