Question

I need help in this section please!!

Answer 1

`(1)/(25)`

Explanation:

Probability of first yellow ball
`=(total\ yellow\ ball)/(Total\ ball)=(2)/(10)=(1)/(5)`

Since first ball is again placed in the bag

Probability of second yellow ball
`=(total\ yellow\ ball)/(Total\ ball)=(2)/(10)=(1)/(5)`

These two are independent events so the probability of both yellow balls=
`=(1)/(5) * (1)/(5) =(1)/(25)`