Total number of cards = 52
∴ n (S) = 52
Now,
Let B be the event that the drawn card bears a number between 3 and 8 (both inclusive).
We know:
Number of cards bearing numbers between 3 and 8 (both inclusive) = 24
n (B) = 24
And,
P (B) =
Probability that the drawn card bears a number between 3 and 8 (both inclusive) =