Multiple choice

A bag contains 7 red and 3 blue balls. One ball is drawn at random. What is the probability that the ball is not red?

  1. 3/10

  2. 7/10

  3. 1/3

  4. 2/5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Total balls = 7 + 3 = 10. Not red means blue. Probability = 3/10.

AI explanation

The total number of balls in the bag is 7 red plus 3 blue, which equals 10 balls. The probability that the ball is not red is the number of blue balls divided by the total number of balls. Therefore, the probability is 3/10.

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