### Mathematics 2019 JAMB Past Questions

1

Make q the subject of the formula in the equation $$\frac{mn}{a^2} - \frac{pq}{b^2} = 1$$

• A. $$q = \frac{b^2(mn - a^2)}{a^2 p}$$
• B. $$q = \frac{m^2 n - a^2}{p^2}$$
• C. $$q = \frac{mn - 2b^2}{a^2}$$
• D. $$q = \frac{b^2 (n^2 - ma^2)}{n}$$
JAMB 2019
2

The angle of elevation of the top of a tree from a point on the ground 60m away from the foot of the tree is 78°. Find the height of the tree correct to the nearest whole number.

• A. 148m
• B. 382m
• C. 282m
• D. 248m
JAMB 2019
3

A binary operation $$\otimes$$ is defined by $$m \otimes n = mn + m - n$$ on the set of real numbers, for all m, n $$\in$$ R. Find the value of 3 $$\otimes$$ (2 $$\otimes$$ 4).

• A. 6
• B. 25
• C. 15
• D. 18
JAMB 2019
4
 Age in years 7 8 9 10 11 No of pupils 4 13 30 44 9

The table above shows the number of pupils in a class with respect to their ages. If a pie chart is constructed to represent the age, the angle corresponding to 8 years old is

• A. 48.6°
• B. 56.3°
• C. 46.8°
• D. 13°
JAMB 2019
5

In a class of 50 students, 40 students offered Physics and 30 offered Biology. How many offered both Physics and Biology?

• A. 42
• B. 20
• C. 70
• D. 54
JAMB 2019