Question

Please help or list steps of how to do it

There are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the first marble chosen. What is the probability of Jamie picking two blue marbles?
A)
1/
15
B)
1/
7
C)
21/
50
D)
7/
15

Answer 1

You do not need to press "return" to put in the denominator in a fraction.

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

7/10 * (7-1)/(10-1) = ?

Answer 2

7/15
Thanks