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

Question 56:

• JAMB 1979

What is log₇(49^a) - log₁₀(0.01)?

A. \(\frac{49^a}{100}\)
B. \(\frac{a}{2}\) + 2
C. 7^2a + 2
D. 2a + 2
E. \(\frac{2a}{2}\)

Question 57:

• JAMB 1979

If \(\sqrt{3^{\frac{1}{x}}}\) = \(\sqrt{9}\) then the value of x is:

A. \(\frac{3}{4}\)
B. \(\frac{4}{3}\)
C. \(\frac{1}{3}\)
D. \(\frac{2}{3}\)
E. \(\frac{1}{2}\)

Question 58:

• JAMB 1980

Find, correct to three significant figures, the value of \(\sqrt{41830}\).

A. 205
B. 647
C. 2050
D. 6470
E. 64.7

Question 59:

• JAMB 1980

Find, correct to three significant figures, the value of \(\sqrt{41830}\).

A. 205
B. 647
C. 2050
D. 6470
E. 64.7

Question 60:

• JAMB 1980

Evaluate \((2^{0} + 4^{-\frac{1}{2}})^{2}\)

A. \(\frac{1}{4}\)
B. \(\frac{5}{4}\)
C. \(\frac{9}{4}\)
D. 4
E. 9