Mathematics 2004 Jamb Past Questions and Answers

Question 21 :

• 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 22 :

• 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

Question 23 :

• JAMB 2004

A committee of six is to be formed by a state governor from nine state commissioners and three members of the state house of assembly. In how many ways can the members of the committee be chosen so as to include one member of the house of assembly

A. 378 ways
B. 462 ways
C. 840 ways
D. 924 ways

Question 24 :

• JAMB 2004

The weight of 10 pupils in a class are 15 kg, 16 kg, 17 kg, 18 kg, 16 kg, 17 kg, 17 kg, 17 kg, 18 kg, and 16 kg. What is the range of this distribution?

A. 4
B. 3
C. 1
D. 2

Question 25 :

• JAMB 2004

I. Rectangular bars of equal width
II. The height of each rectangular bar is proportional to the frequency of the corresponding class interval.
III. Rectangular bars have common sides with no gaps in between
A histogram is described completely by

A. I, II and III
B. I and II
C. II and III
D. I and III