A box contains 5 red pens and 3 blue pens. Two pens are picked from the box at random, both at the same time. What is the probability that both pens picked are of the same colour?
13/28
15/28
5/14
3/28
The verified answer and full solution are one login away
Every answer here is machine verified, with a step-by-step solution that teaches the method. Your login also unlocks a 7-question mock preview in the real exam interface.
Log in to see the answerMore probability questions