Test Index

BECE Mathematics 2014 Paper

Question : 26

Total: 40

Solution:

Concept:

Probability is the ratio of favourable outcomes to the total number of equally likely outcomes.

Explanation:

Total number of balls in the box

= 20

Number of blue balls

= 12

Number of green balls

= 20 - 12 = 8

Favourable outcomes for picking a green ball

= 8

Total possible outcomes

= 20

P(\text{green}) = \frac{\text{Number of green balls}}{\text{Total number of balls}} = \frac{8}{20}

Simplify the fraction:

\frac{8}{20} = \frac{2}{5}

Answer:

\frac{2}{5}

(Option B).

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