Question

a bag contains 3 red balls 4 green balls and 5 white balls, if two balls are drawn from the bag, then the probability that the both are red ball is ........ A 1/11
B 5/33
C 1/22
D 1/9
Explain

Answer 1

Answer:

Step-by-step explanation:

There are 12 balls in total.

Now it depends on if the balls are replaced or not.

So if they are replaced = then p = 3/12 *2/11  = 1/22

if replacement is not there =>

3C2 / 12C2 = 3/66 = 1/22