Question

A money envelope contains five $10
bills, ten $20
bills, and fifteen $50
bills. Sandra randomly selects two bills without returning the first bill. What is the probability of getting a $10
bill then a $50
bill? Write your answer in the simplest form of fraction.(

Answer 1

There are 30 bills total. The probability the first is a $10 is 5/30 = 1/6. Given that, there are 15 $50 bills left out of 29 remaining bills, so the second probability is 15/29. Multiply:

(1/6) * (15/29) = 15/174 = 5/58.

Answer: 5/58.