A card is drawn at random from a deck. what is the probability it is a red card, an ace, or both?

52 cards total

26 are red

so you would have a 26/52 reduced to 1/2 probability of picking a red one.

There are 4 aces so you would have a 4/52 reduced to 1/13 probability of picking an ace.

There are 2 red aces so you would have a 2/52 reduced to 1/26 probability of picking a red Ace