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JAMB Mathematics 2011 Paper

Question : 42

Total: 46

Solution:

Concept:

Probability is the ratio of favourable outcomes to the total number of possible outcomes.

Explanation:

The set is

\{43, 44, 45, \ldots, 60\}

Total numbers in the set:

60 - 43 + 1 = 18

Prime numbers in this range are

43, 47, 53, 59

So the number of favourable outcomes is

4

Required probability

= \frac{4}{18}

Simplify:

\frac{4}{18} = \frac{2}{9}

Answer:

\frac{2}{9}

Option C.

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