NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 11:

• JAMB 2019

Tade bought 200 mangoes at 4 for 30 out of the mangoes got spoilt and the remaining were sold at 2 for Find the percentage profit or loss.

A. 43.6% loss
B. 35% profit
C. 63.2% profit
D. 28% loss

Question 12:

• JAMB 2019

The simple interest on #8550 for 3 years at x% per annum is #4890. Calculate the value of x to the nearest whole number.

A. 19%
B. 20%
C. 25%
D. 16.3%

Question 13:

• JAMB 2019

Simplify 81\(^{\frac{-3}{4}}\) x 25\(^{\frac{1}{2}}\) x 243\(^{\frac{2}{5}}\)

A. \(\frac{2}{5}\)
B. \(\frac{3}{5}\)
C. \(\frac{5}{2}\)
D. \(\frac{5}{3}\)

Question 14:

• JAMB 2019

Find the value of \(\frac{(0.5436)^3}{0.017 \times 0.219}\) to 3 significant figures.

A. 46.2
B. 43.1
C. 534
D. 431

Question 15:

• JAMB 2019

The weight of a day-old chick was measured to be 0.21g. If the actual weight of the chick is 0.18g, what was the percentage error in the measurement?

A. 15.5%
B. 18.2%
C. 14.8%
D. 16.7%