Jamb Mathematics 2018 Past Questions and Answers

Question 56:

• JAMB 2018

An arc of a circle of radius 14cm subtends angle 300° at the centre. Find the perimeter of the sector formed by the arc (take π = \(\frac{22}{7}\))

A. 14.67cm
B. 42.67cm
C. 101.33cm
D. 513.33cm

Question 57:

• JAMB 2018

Simplify

\(\frac {25^{\frac{2}{3}} \div 25^{\frac{1}{6}}} {(\frac{1}{5})^{\frac{7}{6}} \div (\frac{1}{5})^{\frac{1}{6}}}\)

A. 25
B. \(\frac{1}{5}\)
C. 1
D. \(\frac{1}{25}\)

Question 58:

• JAMB 2018

Make T the subject of the relation.

A. T = \(\frac{R + P3}{15Q}\)
B. T = \(\frac{R - 15P^3}{Q}\)
C. T =R - \(\frac{15P^3}{Q}\)
D. T = \(\frac{15R + Q}{P^3}\)

Question 59:

• JAMB 2018

What is the place value of 9 in the number 3.0492?

A. \(\frac{9}{10000}\)
B. \(\frac{9}{1000}\)
C. \(\frac{9}{100}\)
D. \(\frac{9}{10}\)

Question 60:

• JAMB 2018

If the simple interest on a sum of money invested at 3% per annum for 2\(\frac{1}{2}\) years is N123, find the principal.

A. N676.50
B. N820
C. N1,640
D. N4,920