Given that:
Number of red balls = 8
Number of white balls = 5
∴ Total balls, n = 13
It is given that 3 balls are drawn at random
⇒ r = 3
∴ n(S) = nCr = 13C3
(a) All the three balls are white
We know that,
Total white balls are = 5
(b) All the three balls are red
We know that,
Total red balls are = 8
(c) One ball is red and two balls are white
We know that,
