PRC-2 · Chapter 11 · Question 43 of 60
Two standard, fair 6-sided dice are rolled simultaneously. What is the mathematical probability that the sum of the two upward faces is exactly 7?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) 1/6
Explanation
There are 36 total possible combinations. The combinations that sum to 7 are (1,6), (2,5), (3,4), (4,3), (5,2), and (6,1). That is 6 successful outcomes out of 36, which simplifies to 1/6.
More Probability Concepts MCQs
- Q45What is the mathematical sum of the probabilities of all mutually exclusive and exhaustive events in a given sample space?
- Q46What is the mathematical range of a probability value (P) for any single, specific event?
- Q47If two events, A and B, are defined as 'mutually exclusive', what is the probability of both events occurring simultaneously P(A ∩ B)?
- Q48The 'Complementary Rule' in probability theory states that the probability of an event NOT occurring [P(A')] is equal to:
- Q49If two events are 'independent', the probability of both occurring P(A ∩ B) is calculated using the Multiplication Rule as: