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Quick Math problem: Probability. Please help!?
Lets say you have a bag of 5 marbles. 2 are red, 2 are blue and 1 is white.
What is the probability you will first draw a red one, replace it and draw a white?
4 Answers
- Pi R SquaredLv 78 years agoFavorite Answer
Hi,
(2/5)(1/5) = 2/25 = 8% <==ANSWER
I hope that helps!! :-)
- 8 years ago
Its 2/25 Here's how:
.
P(1st red marble is drawn,replaced nd 2nd drawn marble is white) = P(drawn marble is red) * P(drawn ball is white)
= (2/5)*(1/5)
=2/25
- ?Lv 58 years ago
successive acts: multiply the probs.
to begin, the odds of red are # desired/# possible
sso it is 2/5
then on to white, 1/5
2/5*1/5 =2/25
- Anonymous5 years ago
the activities are self sufficient the opportunity of yellow contained in the A spinner is 4/6 the opportunity of yellow contained in the B spinner is two/8 the blended threat is the made from 4/6 and 2/8 = a million/6
