Question

find the probability of deawing 3 aces at random from a deck of 52 ordinary cards if tha cards are replaced and not replaced

Answer 1

If the cards are replaced,
n(S)=52
n(E)=3
P(E)=3/52
If card are not replaced,
n(S)=52-3=49
N(e)=3
So P(e)=3/49.