Q. Two cards are drawn at random from a pack of 52 cards. What is the probability that at least one card is black?
✅ Correct Answer: (A)
77/102
Explanation: Complement: both red = 26C2/52C2 = 25/102. Required probability = 1 - 25/102 = 77/102.
Explanation by: Krishna Sharma
Complement: both red = 26C2/52C2 = 25/102. Required probability = 1 - 25/102 = 77/102.