Number of cards n(S) = 52
No. of King cards n(A) = 4
No. of Queen cards n(B) = 4
No. of Jack cards n(C) = 4
Probability of drawing a King card
= \(\frac{n(A)}{n(S)}=\frac{4}{52}\)
Probability of drawing a Queen card
= \(\frac{n(B)}{n(S)}=\frac{4}{52}\)
Probability of drawing a Jack card
= \(\frac{n(C)}{n(S)}=\frac{4}{52}\)
The Probability of drawing a King or a Queen or a Jack from a deck of cards
= P(A) + P(B) + P(C) = \(\frac{4}{52}+\frac{4}{52}+\frac{4}{52}=\frac{4+4+4}{52}=\frac{12}{52}=\frac{3}{13}\)
