The probability of getting a correct answer to a question is \(\frac{x}{12}\). If the probability of not getting the correct answer is \(\frac{2}{3}\), then what is the value of x ?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 4
Getting the answer right and not getting it right are complementary events: their probabilities add up to 1.
Probability of a correct answer: \(\displaystyle\frac{x}{12}=1-\frac{2}{3}=\frac{1}{3}\), so \(x=4\)