Jamb Mathematics 2020 Past Questions and Answers

Question 36:

• JAMB 2020

In a class of 40 students, 32 offer mathematics, 24 offer physics and 4 offer neither mathematics nor physics. How many offer both mathematics and physics?

A. 4
B. 8
C. 16
D. 20

Question 37:

• JAMB 2020

The sum of the interior angle of pentagon is 6x + 6y. Find y in terms of x.

A. Y = 6 - x
B. Y = 90 - x
C. Y = 120 - x
D. Y = 150 - x

Question 38:

• JAMB 2020

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

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

Question 39:

• JAMB 2020

A surveyor walks 500m up a hill which slopes at an angle of 30\(^o\). Calculate the vertical height through which he rises

A. 252m
B. 500m
C. 250m
D. 255m

Question 40:

• JAMB 2020

Find the non-zero positive value of x which satisfies the equation

\(\begin{bmatrix} x & 1 & 0 \\ 1 & x & 1 \\ 0 & 1 & x \end{bmatrix}\) = 0

A. 2
B. \(\sqrt{3}\)
C. \(\sqrt{2}\)
D. 1