STATISTICS - Jamb Mathematics Past Questions and Answers

Question 236:

• JAMB 2004

An unbiased die is rolled 100 times and the outcome is tabulated above.
What is the probability of obtaining a 5?

A. 1/5
B. 1/2
C. 1/6
D. 1/4

Question 237:

• JAMB 2004

The pie chart above shows the distribution of the crops harvested from a farmland in a year. If 3000 tonnes of millet is harvested, what amount of beans is harvested

A. 6000 tonnes
B. 1500 tonnes
C. 1200 tonnes
D. 9000 tonnes

Question 238:

• JAMB 2004

In how many ways can 2 students be selected from a group of 5 students in a debating competition?

A. 25 ways
B. 10 ways
C. 15 ways
D. 20 ways

Question 239:

• JAMB 2004

The mean age of a group of students is 15 years. When the age of a teacher, 45 years old, is added to the age of the students, the mean of their ages becomes 18 years. Find the number of the students in the group

A. 9
B. 7
C. 42
D. 15

Question 240:

• JAMB 2004

A container has 30 gold medals, 22 silver medals and 18 bronze medals. If one medals is selected at the random from the container, what is the probability that it is not a gold medal?

A. 9/35
B. 11/35
C. 4/7
D. 3/7