The probability of getting a composite number when a six faced unbiased die is thrown?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → \(\frac{1}{3}\)
A composite number has a factor other than 1 and itself; 1 is neither prime nor composite. Probability = favourable outcomes ÷ all outcomes.
The die shows 1, 2, 3, 4, 5 or 6: 6 equally likely outcomes
2, 3 and 5 are prime and 1 is neither, so the composite numbers are only 4 and 6: 2 outcomes
Probability \(\displaystyle=\frac{2}{6}=\frac{1}{3}\)