Indices, Logarithms and Surds - Jamb Mathematics Past Questions and Answers

Question 26:

• JAMB 2016

Evaluate \(\frac{0.8 \times 0.43 \times 0.031}{0.05 \times 0.72 \times 0.021}\). Correct to four significant figures.

A. 14.09
B. 14.1
C. 14.12
D. 14.11

Question 27:

• JAMB 2016

Evaluate \(\frac{12.02 \times 20.06}{26.04 \times 60.06}\), correct to three significant figures.

A. 0.157
B. 0.154
C. 0.155
D. 0.158

Question 28:

• JAMB 2016

Rationalize \(\frac{\sqrt{6} - \sqrt{4}}{\sqrt{6} + \sqrt{4}}\)

A. 5 + 2 \(\sqrt{6}\)
B. 5 - 4 \(\sqrt{6}\)
C. 5 + 4 \(\sqrt{6}\)
D. 5 - 2 \(\sqrt{6}\)

Question 29:

• JAMB 2015

Simplify log₁₀1.5 + 3 log₁₀2 − log₁₀0.3

A. Log₁₀4
B. Log₁₀40
C. Log₁₀-40
D. Log₁₀4^-

Question 30:

• JAMB 2015

If log₅20 = x, find x

A. 1.761
B. 1.354
C. 1.861
D. 2.549