Question

Q13. CASE STUDY - 3 On a weekend Rani was playing cards with her family .The deck has 52 cards.If her brother drew one card . 1. Find the probability of getting a king of red color or an ace. 2. Find the probability of getting a black face card.​

Answer 1

the probability of a King of red colour is= 2/52

the probability of black face card is= 6/52

Answer 2

Given:

The deck has 52 cards

To find:

1.Find the probability of getting a king of red color or an ace.

2.Find the probability of getting a black face card.​

Solution 1:

number of getting a king of red color n(K) = 2

number of ace n(a) =4

where n(S)  = 52

Probability of getting a king of red color or an ace = $\frac{n(K)}{n(S)}+\frac{n(A)}{n(S)}$

                                                                                    =  $\frac{2}{52} +\frac{4}{52}$

                                                                                    =$\frac{6}{52}$

Solution 2:

number of getting a black face card n(B) = 6

where n(S)  = 52

Probability of getting a black face card =$\frac{n(B)}{n(S)}$

                                                                 =$\frac{6}{52}$

Probability of getting a king of red color or an ace =$\frac{6}{52}$

Probability of getting a black face card  =$\frac{6}{52}$