Multiple choice

A bag contains 3 blue and 7 red balls. Find the probability that a ball selected at random from the bag will be a blue ball

  1. $\dfrac 37$
  2. $\dfrac 7{10}$
  3. $\dfrac 3{10}$
  4. $\dfrac4{10}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Total balls = 3 + 7 = 10. Number of blue balls = 3. Probability = 3/10.

AI explanation

The bag contains 3 blue and 7 red balls, making a total of 10 balls. According to the classical definition of probability, the chance of selecting a blue ball is the number of blue balls divided by the total number of balls. Therefore, the required probability is 3/10.

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