Multiple choice

A box contains 6 red, 3 yellow and 2 green balls. If two balls are picked at random, what is the probability that both of them are red?

  1. 3/11

  2. 4/11

  3. 2/11

  4. 3/10

  5. 7/11

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total balls = 11. P(both red) = (6/11) * (5/10) = 30/110 = 3/11.

AI explanation

The total number of balls is 11, making the total ways to draw 2 balls 11C2, which equals 55. The number of ways to draw 2 red balls from the 6 available is 6C2, which equals 15. The probability is 15 divided by 55, which simplifies to 3/11.