Question

http://prntscr.com/52td1t

Answer 1

@student20101

Answer 2

it's like that other problem we just did. there's only one 4, so the probability of getting the 4 is 1/5. and since the cards get replaced, the probability stays the same the second time.

so 1/5 x 1/5

Answer 3

so why is it two 1/5's?

Answer 4

P(4) = 1/5
as one card has been taken out and replaced
Again P(4) = 1/5
So total P = P(4) *P(4)

Answer 5

Because probabilty of having 4 is only 1/5 , no matter how many times we do it.

Answer 6

oh I see

Answer 7

the card gets replaced, so the probability stays the same