There are 4 Aces in a deck and hence 4 ways of drawing the first ace. Obviously the aces are not identical objects and the order in which they are arranged is important.

Now the pack contains 3 aces and so there are three ways of drawing the 2nd ace.

As a result of drawing two aces we have two aces left in our deck. So the third ace can be either one of them giving us a choice of two cards.

So number of ways = 4 * 3 * 2 = 24

Now the pack contains 3 aces and so there are three ways of drawing the 2nd ace.

As a result of drawing two aces we have two aces left in our deck. So the third ace can be either one of them giving us a choice of two cards.

So number of ways = 4 * 3 * 2 = 24