Multiple choice

A box contains 6 red, 7 green and 5 blue balls. Each ball is of a different size. The probability that the selected ball is the smallest red ball is

  1. 1 6

  2. 1 12

  3. 1 9

  4. 1 18
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Total balls = 6 + 7 + 5 = 18. There is only one smallest red ball. The probability of picking it is 1/18.

AI explanation

The box contains a total of 6 red, 7 green, and 5 blue balls, summing to 18 balls. Since only one specific ball is the smallest red ball, there is exactly 1 favorable outcome. The probability of selecting this specific ball out of the 18 distinct balls is 1 / 18.

Keep practicing — related questions