From a single deck of cards, you select a card, look at it, put it back in the deck and shuffle. If you do this 10 times, what is the probability of drawing exactly...
a) 1 Ace
b) 2 Aces
The probability of drawing an Ace is 4/52, while the probability of drawing some other card is 48/52.
The probability of all events occurring is found by multiplying the probability of the individual events.
I hope this helps.