Discussion

Explanation:

Either the first card can be red and second black or vice versa.

P (1^st red) = 26/52 = 1/2.

P (2^nd black) = 26/52 = 1/2

∴ P (1^st red and 2nd black) = 1/2 × 1/2 = 1/4

∴ P (1^st black and 2nd red) = 26/52 × 26/52 = 1/4

P (a red and a black card) = P (1^st red and 2^nd black) + P (1^st black and 2^nd red) = 1/2.

Hence, option (b).

» Your doubt will be displayed only after approval.