There are 4 yellow marbles, 6 green marbles, and 5 blue marbles in a jar. Event A is defined as drawing a green marble from the jar on the first draw. Event B is defined as drawing a yellow marble on the second draw.
If two marbles are drawn from the bag, one after the other without replacement, what is P(B|A) expressed in simplest form?

A)4/15
B)2/7
C)1/3
D)2/5

(a)

Step-by-step explanation:

Given

There are 4 yellow, 6 green and 5 blue marbles

We have to find i.e. conditional probability of B given that A is occurred.

is given by

Also A=drawing a green marble

B=drawing a yellow marble

Total no of marbles

So,

similarly

Substituting the values in the formula

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation: