FIND THE PROBABILITY OF CHOOSING A BLUE MARBLE THEN RED MARBLE IF THE MARBLES ARE NOT REPLACED


there are 4 white 3 blue and 5 red marbles

Verified Answer :

if you choose a blue marble first its the probability of 3/12 simplified to 1/3 and then the probability of choosing a red next is 5/11 as you didnt replace the one blue marble

4:12 Hope I helped! 
4 blue to all