Card Draw Question

Question

One card is drawn from an ordinary deck of 52 cards. Find the probabilities  of drawing the following cards:

 

a) A 2 or a 3

b) A black card or a 2

c) A 3 or a red 10

d) a club or red card

e) a face card or a spade 

 

Answer 1

Hi Amanda,

 

Probability equals the number of events that satisfy your criteria divided by the total number of events

 

So for a)  A, 2 or 3  - there are 4 aces, 4 twos and4 threes

 

therefore we have 12 events that satisfy your criteria  and the total number of possible events is 52

 

so the probability for a) is 12/52 or about 23%

 

b) 26 black cards and 4 twos but 2 of the twos are already counted in the black cards

 

so 28/52

 

 

hopefully using this approach you can find the rest

 

good luck