A box contains 12 identical balls of which 5 are red, 4 blue, and the
MATHEMATICS
WAEC 2020
A box contains 12 identical balls of which 5 are red, 4 blue, and the rest are green. If two balls are selected at random one after the other with replacement, what is the probability that both are red?
- A. \(\frac{25}{144}\)
- B. \(\frac{5}{33}\)
- C. \(\frac{5}{6}\)
- D. \(\frac{103}{132}\)
Correct Answer: A. \(\frac{25}{144}\)
Explanation
Pr(RR) = \(\frac{5}{12}\) = \(\frac{5}{12} \times \frac{5}{12} = \frac{25}{144}\)
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *