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MATHEMATICS

JAMB 2002 - Question 43

Mathematics 2002 JAMB Past Questions - Question 43: The venn diagram above shows the number of student offering Music and history in a class of 80 student. if a students is picked at random from the class, what is the probability that he offers Music only?

The venn diagram above shows the number of student offering Music and history in a class of 80 student. if a students is picked at random from the class, what is the probability that he offers Music only?

A: 0.38

B: 0.13

C: 0.50

D: 0.25

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Correct Answer

Explanation

80 = (30 - x) + x +40 - x + 2080 = 90 - x, x = 90 - 80 = 10N (music only) = 30 - x = 30 - 10 = 20p (music only) = 20/80 = 1/4 = 0.25