Multiple choice

Balls are numbered from $1$ to $20$. A ball is drawn at random, what is the probability that the ball drawn is a multiple of $5?$

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

Multiples of 5 between 1 and 20 are 5, 10, 15, 20. There are 4 such numbers. Probability = 4/20 = 1/5.

AI explanation

A ball is drawn from a set of 20 balls, making the total number of possible outcomes 20. The multiples of 5 between 1 and 20 are 5, 10, 15, and 20, giving 4 favorable outcomes. Using the basic probability formula of favorable outcomes divided by total outcomes, the probability is 4 divided by 20. This simplifies to 1 divided by 5.

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