Post Utme Ahmadu Bello University Mathematics Past Questions and Answers

Question 11:

Find n if 34_n = 10011₂

A. 5
B. 6
C. 7
D. 8

Question 12:

The radius of a circle is given as \(5 \mathrm{~cm}\) subject to an error of \(0.1\) \(\mathrm{cm}\). What is the percentage error in the area of the circle?

A. \(1 / 25\)
B. \(1 / 4\)
C. 4
D. 25

Question 13:

What is the value of \(x\) satisfying the equation \(4^{2 x} / 4^{3 x}=2\)

A. \(-2\)
B. \(-1 / 2\)
C. \(1 / 2\)
D. 2

Question 14:

If \(x=3-\sqrt{3}\), find \(x^{2}+\frac{36}{x^{2}}\)

A. 9
B. 18
C. 24
D. 27

Question 15:

Solve the equation \(y^{2}-11 y+\) \(24=0\)

A. 8,3
B. 64, 9
C. 6, 4
D. 9, -8