You take four cards out of original playing card deck without returning them. Find the probability that a) all four are aces, b) all four are of the same suit.

If a card is picked at random from a standard 52-card deck, what is the probability of getting a spade or a face card? Note: there are 3 face cards in each suit (the King, Queen, and Jack).

Kim has a bag of 10 white marbles and 15 black marbles. What is the probability that she will choose to marbles that are both the same colour without replacement 

A child has a box containing 8 toys cars and 6 toy trucks. They reach in and randomly select 2 toys, one after the other without replacement.  Determine the probability that the two toys selected are toy cars?

In a game of euchre, the deck consists of the 9, 10, jack, queen, king and ace of each suit. Players are dealt a five card hand. What is the probability that a player is dealt 2 hearts? What is the probability that a player is dealt 4 kings?