Jamb Mathematics 2020 Past Questions and Answers

Question 26:

• JAMB 2020

Find the simple interest rate percent annum at which N1000 accumulates to N1240 in 3 years.

A. 6%
B. 8%
C. 10%
D. 12%

Question 27:

• JAMB 2020

The pie chart shows the income of a civil servant in month. If his monthly income is N6,000. Find his monthly basic salary.

A. N2,050
B. N2600
C. N3,100
D. N3,450

Question 28:

• JAMB 2020

If x is positive real number, find the range of values for which \(\frac{1}{3}\)x + \(\frac{1}{2}\) > \(\frac{1}{4}\)x

A. X > -\(\frac{1}{6}\)
B. X > 0
C. 0 < x < 6
D. 0 < x <\(\frac{1}{6}\)

Question 29:

• JAMB 2020

Find the value of x if \(\frac{\sqrt{2}}{x + \sqrt{2}}\) = \(\frac{1}{x - \sqrt{2}}\)

A. 3\(\sqrt{2}\) + 4
B. 3\(\sqrt{2}\) - 4
C. 3 - 2\(\sqrt{2}\)
D. 4 + 2\(\sqrt{2}\)

Question 30:

• JAMB 2020

A binary operation x is defined by a x b = a\(^b\). If a x 2 = 2 - a, find the possible values of a?

A. 1, -2
B. 2, -1
C. 2, -2
D. 1, -1