Jamb Mathematics 2019 Past Questions and Answers

Question 51:

• JAMB 2019

If \(25^{1 - x} \times 5^{x + 2} \div (\frac{1}{125})^{x} = 625^{-1}\), find the value of x.

A. X = -4
B. X = 2
C. X = -2
D. X = 4

Question 52:

• JAMB 2019

A bricklayer charges #1,500 per day for himself and #500 per day for his assistant. If a two bedroom flat was built for #95,000 and the bricklayer worked 10 days more than his assistant, how much did the assistant receive?

A. N20,000
B. N28,000
C. N31,200
D. N41,000

Question 53:

• JAMB 2019

Find the equation of the locus of a point A(x, y) which is equidistant from B(0, 2) and C(2, 1)

A. 4x + 2y = 3
B. 4x - 3y = 1
C. 4x - 2y = 1
D. 4x + 2y = -1

Question 54:

• JAMB 2019

A factory worker earns #50,000 per month out of which he spends 15% on his children's education, #13,600 on Food, 3% on electricity and uses the rest for his personal purpose. How much does he have left?

A. N21,850
B. N18,780
C. N27,400
D. N32,500

Question 55:

• 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