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Probability · Question 34 of 70

Question 34

EasyOriginal question

Two fair dice are thrown. What is the probability that the sum is 7?

Options for question 34

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. There are 6×6=366 \times 6 = 36 equally likely outcomes.

  2. The sum is 7 in 6 of them: (1, 6), (2, 5), (3, 4), (4, 3), (5, 2), (6, 1). So the probability is 636=16\frac{6}{36} = \frac{1}{6}.

Worth noting

The 11 possible sums from 2 to 12 are not equally likely, so 111\frac{1}{11} is wrong.

Concept
Sums with two dice
Typical time
60 s
Your time
—
The rule this testsEqually likely outcomes
Practise this chapter →

Ten questions from Probability, at your own pace.

Practise this chapter →

Ten questions from Probability, at your own pace.