Multiple choice

A bag has 4 red balls and 2 yellow balls.(The balls are identical in all respect other than colour.) A ball is drawn from the bag without looking into the bag.The probability of getting a red ball is _______ .

  1. $\dfrac{1}{2}$
  2. $\dfrac{2}{3}$
  3. $\dfrac{1}{4}$
  4. $\dfrac{1}{5}$
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B Correct answer
Explanation

Total balls = 4 red + 2 yellow = 6. Probability of red = (Number of red) / (Total balls) = 4 / 6 = 2/3.

AI explanation

The total number of balls in the bag is the sum of red and yellow balls, which is 4 + 2 = 6. The number of favorable outcomes for drawing a red ball is 4, as there are 4 red balls. Using the classical probability formula, the probability of drawing a red ball is the number of red balls divided by the total number of balls, which is 4/6, simplifying to 2/3.

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