Jamb Mathematics Past Questions and Answers

Question 216:

• JAMB 2019

A binary operation Δ is defined by a Δ b = a + 3b + 2.
Find (3 Δ 2) Δ 5

A. 35
B. 59
C. 28
D. 87

Question 217:

• JAMB 2019

This table below gives the scores of a group of students in a Further Mathematics Test.

Score	1	2	3	4	5	6	7
Frequency	4	6	8	4	10	6	2

Find the mode of the distribution.

A. 7
B. 10
C. 5
D. 4

Question 218:

• JAMB 2019

This table below gives the scores of a group of students in a Further Mathematics Test.

Score	1	2	3	4	5	6	7
Frequency	4	6	8	4	10	6	2

Calculate the mean deviation for the distribution

A. 4.32
B. 2.81
C. 1.51
D. 3.90

Question 219:

• JAMB 2019

If the universal set μ = {x : 1 ≤ x ≤ 20} and
A = {y : multiple of 3}
B = |z : odd numbers}
Find A ∩ B

A. {1, 3, 6}
B. {3, 5, 9, 12}
C. {3, 9, 15}
D. {2, 3, 9}

Question 220:

• JAMB 2019

If \(\begin{vmatrix} 2 & -5 & 3 \\ x & 1 & 4 \\ 0 & 3 & 2 \end{vmatrix} = 132\) find the value of x.

A. 5
B. 8
C. 6
D. 3