Statistics - Mathematics Jamb Past Questions and Answers

Question 41 :

• JAMB 2017

If U = {x : x is an integer and 1 ≤ x ≤ 20 }
E1 = {x: x is a multiple of 3}
E2 = {x: x is a multiple of 4} and an integer is picked at random from U, find the probability that it is not in E2

A. \(\frac{3}{4}\)
B. \(\frac{3}{10}\)
C. \(\frac{1}{4}\)
D. \(\frac{1}{20}\)

Question 42 :

• JAMB 2017

Given T = {even numbers from 1 to 12}
N = {common factors of 6, 8 and 12} Find T n N

A. {2, 3}
B. {2, 3, 4}
C. {3, 4, 6}
D. {2}

Question 43 :

• JAMB 2016

If the mean of 4, y, 8 and 10 is 7. Find Y?

A. 6
B. 10
C. 7
D. 9

Question 44 :

• JAMB 2016

The pie chart above shows the distribution of subjects offered by students in SSS III level. If 80 students enrolled in the class.

What is the size of the angle of the sector in economics?

A. 24^o
B. 39^o
C. 32^o
D. 36^o

Question 45 :

• JAMB 2016

Calculate the range of 20, -6, 25, 30, 21, 28, 32, 33, 34, 5, 3, 2, and 1.

A. 32
B. 36
C. 33
D. 40