Multiple choice

$20$ card are numbered from $1$ to $20$. One card is drawn at random. What is the probability that the number on the card is odd?

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

Numbers from 1 to 20 contain 10 odd numbers (1, 3, 5, 7, 9, 11, 13, 15, 17, 19). Probability = 10/20 = 1/2.

AI explanation

The total number of cards is 20, and the odd numbers between 1 and 20 are 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19, giving 10 favorable outcomes. Using the basic probability formula, the probability is 10 divided by 20. Simplifying this fraction gives 1 divided by 2.

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