There are 8 red balls, 5 yellow balls and 2 green balls in a bag. A person picks up some balls at random. Find the probability that he picks 5 red balls and 2 yellow balls (one ball at a time) if he had been picking the balls without replacement.

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations,
examples, and problems from the community.

Used and loved by over 5 million people

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Your answer seems reasonable.
Find out if you're right!