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One bag contain 3 blue and 5 red balls, another bag contain 2 blue and...

Mathematics
JAMB 2015

One bag contain 3 blue and 5 red balls, another bag contain 2 blue and 4 red balls respectively. One ball is drawn for each bag. What is the probability both balls are blue

  • A. \( \frac{2}{15} \)
  • B. \( \frac{3}{24} \)
  • C. \( \frac{3}{21} \)
  • D. \( \frac{3}{28} \)
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Correct Answer: Option B
Explanation

The probability of drawing a blue ball from the first bag is \( \frac{3}{8} \), since there are 3 blue balls out of 8 total balls.

The probability of drawing a blue ball from the second bag is \( \frac{2}{6} = \frac{1}{3} \), since there are 2 blue balls out of 6 total balls.

Since the draws from each bag are independent, the probability that both balls are blue is the product of the individual probabilities:  
\( \frac{3}{8} \times \frac{2}{6} = \frac{3 \times 2}{8 \times 6} = \frac{6}{48} = \frac{1}{8}. \)

 

There is an explanation video available below.


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Explanation Video

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