Logarithms - Jamb Mathematics Past Questions and Answers

Question 51:

• JAMB 2015

Simplify log₁₀1.5 + 3 log₁₀2 − log₁₀0.3

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

Question 52:

• JAMB 2015

If log₅20 = x, find x

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

Question 53:

• JAMB 2015

Evaluate log₇17

A. 1.35
B. 1.353
C. 1.455
D. 0.455

Question 54:

• JAMB 2015

Evaluate log5(\( y^2x^5 ÷ 125b½) \)

A. 2 log₅y + 5log₅ y² − 3
B. Log₅ y² + 5log₅ x + 3
C. 25log_y 5 + 3
D. 2log₅y + 5log₅x − ½ log₅b −3

Question 55:

• JAMB 2020

If log\(_{10}\)2 = 0.3010 and log\(_{10}\)3 = 0.4771, eventually without using the logarithm tables, log\(_{10}\)4.5

A. 0.3010
B. 0.4771
C. 0.6532
D. 0.9542