CBSE Class 12-science - Independent Events Videos
More on Independent Events in Probability
Independent Events
-
doubt
- A bag contains 5 white balls and 9 red balls. Three balls are drawn from the bag. What is the probability that at least one ball is white?: Looks like answer posted as 55/182 is wrong. Request to recheck it once again.
- A bag contains 5 white balls and 9 red balls. Three balls are drawn from the bag. What is the probability that at least one ball is white?
- A bag contains 5 white balls and 9 red balls. Three balls are drawn, without replacement, from the bag. What is the probability that at least one ball is white?
- A bag contains 7 white , 5 Black and 4 red balls. 4 balls are drawn without replacement. Find the probability that atleast 3 balls are black.
- From a bag containing 8 white and 5 Black balls. Four balls are drawn one by one without replacement . Find the probability that exactly two of them are white.
-
a bag contains 4 red ,6 green, 3 white balls ,three balls are drawn one after one the other without replacement,find the probability that the balls are red,green and green
My doubt is --How can we solve this question by combination ?
The explanation given is
- Neelam has offered physics , chemistry and mathematic sin class XII. She estimates that her probabilities of receiving a grade A in these course are 0.2 , 0.3 and 0.9 respectively . Fins the probability that neelam receives : exactly 2A grades
- What are independent events?
-
If A and B are independent events, such that P(A) =
, P(B) = 
, then find 
.
