MATHEMATICS

JAMB 2007 - Question 6

Mathematics 2007 JAMB Past Questions - Question 6: The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 11 years old? Age in years 10 ; 11 ;12       No of pupils ;6 27 ; 7

The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 11 years old? Age in years 10 ; 11 ;12       No of pupils ;6 27 ; 7
The table above shows the number of pupils in each age group in a class. What is the probability that a pupil chosen at random is at least 11 years old? Age in years 10 ; 11 ;12       No of pupils ;6 27 ; 7
A:
B:
C:
D:
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Correct Answer

B

Explanation

Total number of pupils = 6 +27 +7 = 40.Number of pupils that are at least 11yeare old - 27 +7 =34therefore prob (at least 11 years) = 34 /40 = 17 /20