NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 21:

• JAMB 2019

Express \((0.0439 \div 3.62)\) as a fraction.

A. \(\frac{21}{100}\)
B. \(\frac{21}{1000}\)
C. \(\frac{12}{1000}\)
D. \(\frac{12}{100}\)

Question 22:

• 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 23:

• 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 24:

• 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 25:

• 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}