NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 116:

• JAMB 2015

If (159.75)₁₀ = (y)₆. Find x

A. X₆ = 123.34₆
B. X₆ = 424.5₆
C. X₆ = 122.43₆
D. X₆ = 124.45₆

Question 117:

• JAMB 2015

A man bought a car for N800 and sold it for N520. Find his loss per cent

A. 15%
B. 25%
C. 35%
D. 10%

Question 118:

• JAMB 2015

Simplify \(6\frac{1}{12} − 2 ¾ + 1 ½ \)

A. \( 3 \frac{5}{6}\)
B. \( 4 \frac{5}{6}\)
C. \( 2 \frac{1}{6}\)
D. \( \frac{1}{3} \)

Question 119:

• JAMB 2015

Given that S and T are sets of real numbers such that S = {x : 0 \(\leq\) x \(\leq\) 5} and T = {x : − 2 < x < 3} Find S \(\cup\) T

A. −3 < x < \(\leq\)3
B. −2 < x < \(\leq\)5
C. 2 < x < \(\geq\) −5
D. −1 < x \(\geq\) \(\leq\)2

Question 120:

• JAMB 2015

If an investor invest N450,000 in a certain organization in order to yield X as a return of N25,000. Find the return on an investment of N700,000 by Y in the same organization.

A. N14,950.50K
B. N25,150.30K
C. N15,000.00K
D. N38,888.90K