A random digit from 1 to 7 is selected. What is the probability that the digit is even?
Answer
B 3/7
The correct answer is B 3/7 — Compute the probability as favourable outcomes divided by total outcomes: 3 ÷ 7 = 3/7. This is the probability of selecting an even digit.
Step-by-step solution
- Identify the even digits between 1 and 7: 2, 4, 6. These are the favourable outcomes.
- Count the favourable outcomes: 3. The total possible outcomes are the 7 digits.
- Compute the probability as favourable outcomes divided by total outcomes: 3 ÷ 7 = 3/7. This is the probability of selecting an even digit.
Common mistake: Counting only two even numbers or dividing by 6 instead of 7
Concept tested: Probability of selecting an even digit
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