Multiple choice

Five cards are drawn simultaneously from a pack of 52 playing cards. What is the probability of drawing 2 cards of hearts and 3 black cards?

  1. 13C2x26C3

  2. (13C2)x(26C3)/(52C5 )

  3. 26C5

  4. 52C5

  5. (13C2)x(52C5 )/(26C3)x(52C5 )

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

As the cards are drawn simultaneously, there is no replacement made. Let S be the sample space and E1 be the event of selecting 2 hearts and E2 be the event of selecting 3 black cards. Number of ways of drawing 5 cards out of 52= n(S) = 52C5 Number of ways of drawing 2 hearts out of 13 = n(E1) = 13C2 Number of ways of drawing 3 black out of 26 = n(E2) = 26C3 Since both the events are independent of each other, then the probability of drawing 2 hearts and 3 black cards = P(E) = n(E1)x n(E2)/n(S) = (13C2)x(26C3) / (52C5 )