Multiple choice

Two unbiased dice are rolled once. Find the probability of getting sum less than $5$.

  1. $\dfrac{1}{6}$
  2. $\dfrac{3}{4}$
  3. $\dfrac{2}{3}$
  4. $\dfrac{1}{5}$
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A Correct answer
Explanation

Total outcomes = 36. Sum < 5: (1,1), (1,2), (1,3), (2,1), (2,2), (3,1). Total favorable = 6. Probability = 6/36 = 1/6.

AI explanation

The total number of outcomes when two unbiased dice are rolled is 36. The combinations resulting in a sum less than 5 are (1,1), (1,2), (2,1), (1,3), (2,2), and (3,1), giving 6 favorable outcomes. Therefore, the probability is 6 divided by 36, which simplifies to 1/6.

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