Question

The box contains 8 balls: 4 red, 1 green, 3 blue. Two balls are drawn at random, one after the other without replacement.
What is the probability that the first ball was blue, given that second was red_________________?

Answer 1

Add all the numbers and put 3 over that number

Answer 2

Say what?

Answer 3

3/16

Answer 4

add all which numbers?

Answer 5

3/16 was not correct

Answer 6

Gummy, its 8 balls in total, not 8, 4, 1, and 3.
So its 3/7. Essentially its
Probability of Desired result / Total Results.
Since a red ball was already picked, you subtract one from total results.

Answer 7

Thank you so much Sulieman

Answer 8

3/14

Answer 9

3/7 is correct

Answer 10

you sure about that?

Answer 11

Positive