A bag contains ten balls, some of which are red and the rest of which are yellow. When two balls are drawn at random at the same time, the probability that both balls are red is 1/15. How many balls in the bag are red?

 Mar 22, 2018
edited by Lightning  Mar 22, 2018

I think you missed something, the number after "that both balls are red is..."

 Mar 22, 2018

Yep! Sorry!

Lightning  Mar 22, 2018

8 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.