Question

A jar contains 5 red marbles and 8 white marbles . Event A = drawing a white marble on the first draw Event B = drav drawing a red marble on the second draw If two marbles are drawn from the jar , one after the other without replacement , what is P(AandB) expressed in simplest form?

a: 3/13

b: 10/39

c: 5/12

d: 8/13

Answer 1

(B)
`(10)/(39)`

Explanation:

Number of red marbles = 5

Number of white marbles = 8

Total =8+5=13

Event A = drawing a white marble on the first draw

Event B = drawing a red marble on the second draw

P(A)=8/13

P(B)=5/12

Therefore:

P(A and B)

`=(8)/(13) * (5)/(12)\\\\=(10)/(39)`