SOLUTION: There are four black marbles and five red marbles in a bag if you reach in and randomly select 2 marbles what is the probability that both are red
Algebra.Com
Question 1093606: There are four black marbles and five red marbles in a bag if you reach in and randomly select 2 marbles what is the probability that both are red
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
there are 9 marbles in total
:
Probability(P) that first marble selected is red is 5/9
P that second marble selected is red is 4/8 = 1/2
:
P that both marbles selected are red is (5/9) * (1/2) = 5/18
:
RELATED QUESTIONS
There are 5 black marbles, 2 yellow marbles , 1 blue marble and 4 red marbles in a bag.... (answered by Boreal)
You have five red marbles and five blue marbles in a bag. What is the probability of... (answered by ikleyn)
please help me. There are 6 black marbles, 6 white marbles, and 7 red marbles in a bag.... (answered by ikleyn)
In a bag there are 20 red marbles and 15 black ones. By no replacement, find the... (answered by Fombitz)
A bag contains 5 black marbles, 4 red marbles, 6 green marbles, and 5 blue marbles. What... (answered by stanbon)
There are 4 blue marbles, 5 red marbles, 1 green marble, and 2 black marbles in a bag.... (answered by ikleyn)
Each bag contains 8 red marbles and 11 blue marbles. If there are 4 bags, what is the... (answered by Theo)
You have a bag of marbles. In your bag there are 5 red, 3 green, 6 white, 3 blue, and 1... (answered by lynnlo)
A bag contains 30 white marbles and 30 black marbles. If 8 marbles are chosen, what is... (answered by amalm06)