Question

Three cards are picked from all face cards in a deck. Find the number of ways of selecting atleast 2 red cards.
1. 90
2. 100
3. 110
4. 96
5. 85

Answer 1

Correct Answer - Option 3 : 110

Concept:-

1. Number of ways of selecting atleast two when 3 are chosen from n = Number of ways of getting 2 red cards + Number of ways of getting 3 red cards.

2. A deck has 12 face cards, 3 each from 4 suites. (6 are red and 6 black)

Calculation:-

Number of ways of getting atleast 2 red cards = 6C2 × 6C1 + 6C3 = 90 + 20 = 110