A single card is drawn from a deck. Find the probability of selecting

A: A club or a diamond

B: A jack or a black card

A. 1/2.

B. 15/26.

Step-by-step explanation:

Note when you have an 'OR' in the statement we add the probabilities.

A. Club or a diamond. There are 13 clubs and 13 diamonds so

The Required Probability = 13/52 + 13/52

= 1/4 + 1/4 = 1/2.

B. There are 4 jacks and 26 black cards.

The Required Probability = 4/52 + 26/52

= 1/13 + 1/2

= 2/26 + 13/26

= 15/26.