Total number of playing cards = 52
∴ n(S) = 52
Total number of king cards = 4
Total number of heart cards = 13
Total number of red cards = 13 + 13 = 26
∴ Favourable outcomes = 4 + 13 + 26 – 13 – 2 = 28
[Here, we subtract 13 and 2 cards because already these cards come in king cards and heart cards]
We know that,
Probability = \(\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}\)
\(\therefore \) Required Probability = \(\frac{28}{52}\)
\(= \frac 7{13}\)
