Jamb Mathematics 2020 Past Questions and Answers

Question 1:

• JAMB 2020

Evaluate (212)\(_3\) - (121)\(_3\) + (222)\(_3\)

A. (313)\(_3\)
B. (1000)\(_3\)
C. (1020)\(_3\)
D. (1222)\(_3\)

Question 2:

• JAMB 2020

Factorise (4a + 3) \(^2\) - (3a - 2)\(^2\)

A. (a + 1)(a + 5)
B. (a - 5)(7a - 1)
C. (a + 5)(7a + 1)
D. A(7a + 1)

Question 3:

• JAMB 2020

Find all median of the numbers 89, 141, 130, 161, 120, 131, 131, 100, 108 and 119

A. 131
B. 125
C. 123
D. 120

Question 4:

• JAMB 2020

Find all real number x which satisfy the inequality \(\frac{1}{3}\) (x + 1) - 1 > \(\frac{1}{5}\)(x + 4)

A. X < 11
B. X < -1
C. X > 6
D. X > 11

Question 5:

• JAMB 2020

Reach each number to two significant figures and then evaluate \(\frac{0.02174 \times 1.2047}{0.023789}\)

A. O
B. 0.9
C. 1.1
D. 1.2