Get premium membership and access revision papers with marking schemes, video lessons and live classes.
Processing. Please wait.

 Form 3 Probability Video Questions and Answers

A bag contain blue, green and red pens of the same type in the ratio 8:2:5 respectively. A pen is picked at random without replacement, and its colour noted.
(a) Determine the probability that the first pen picked is
(i) Blue
(ii) Either green or red
(b) Using a tree diagram determine the probability that
(i)the first two pens picked are both green
(ii)only one of the first two pens picked is red.

 (1m 54s)
1205 Views     SHARE