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

Question

4 years ago

8

first marble chosen. What is the probability of jamie' s picking 2 white marbles?
A. 1/15
B.1/18
C.1/20
D.1/7
PLEASE HELP

2 answers:

finlep [7] · Answer 1 · 2021-11-16T02:51:50+03:00

finlep [7]4 years ago

8 0

(3/10)*(2/9)=6/90 which reduces to 1/15 which is A

masha68 [24] · Answer 2 · 2021-11-16T04:58:24+03:00

Answer: A. $\frac{1}{15}$

Step-by-step explanation:

Given: The number of white marbles = 3

Total number of marbles =3+7=10

Since, Jamie will randomly pick two marbles out of the bag without replacing the first marble chosen.

The probability of Jamie' s picking 2 white marbles is given by :-

$\text{P(2 white)}=\frac{3}{10}\times\frac{2}{9}=\frac{1}{15}$

Hence, the probability of Jamie' s picking 2 white marbles = $\frac{1}{15}$