Question 16:

• JAMB 2019

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°

Question 17:

• JAMB 2019

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

Question 18:

• JAMB 2019

Rationalize \(\frac{\sqrt{2} + \sqrt{3}}{\sqrt{2} - \sqrt{3}}\)

A. \(-5 - 2\sqrt{6}\)
B. \(-5 + 3\sqrt{2}\)
C. \(5 - 2\sqrt{3}\)
D. \(5 + 2\sqrt{6}\)

Question 19:

• JAMB 2019

Given \(\sin 58° = \cos p°\), find p.

A. 48°
B. 58°
C. 32°
D. 52°

Question 20:

• JAMB 2019

\(\frac{\frac{2}{3} \div \frac{4}{5}}{\frac{1}{4} + \frac{3}{5} - \frac{1}{3}}\)

A. \(\frac{31}{50}\)
B. \(\frac{20}{31}\)
C. \(\frac{31}{20}\)
D. \(\frac{50}{31}\)