NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 76:

• JAMB 2018

Calculate 243\(_{six}\) — 243\(_{five}\) expressing your answer in base 10


B. 1
C. 26
D. 46

Question 77:

• JAMB 2018

Simplify 25\(\frac{1}{2}\) x 8\(\frac{-2}{3}\)

A. 1\(\frac{1}{4}\)
B. 2\(\frac{1}{4}\)
C. 6
D. 10

Question 78:

• JAMB 2017

Given T = { even numbers from 1 to 12 }
N = {common factors of 6, 8 and 12}
Find T ∩ N

A. {2, 3}
B. {2, 3, 4}
C. {3, 4, 6}
D. {2}

Question 79:

• JAMB 2017

Simplify 3 \(^{n − 1}\) x \(\frac{27^{n + 1}}{81^n}\)

A. 3\(^{2n}\)
B. 9
C. 3ⁿ
D. 3 \(^{n + 1}\)

Question 80:

• JAMB 2017

If \(\frac{2 \sqrt{3} - \sqrt{2}}{\sqrt{3} + 2 \sqrt{2}}= m + n \sqrt{6}\),
find the values of m and n respectively

A. 1, − 2
B. − 2, n = 1
C. \(\frac{-2}{5}\), 1
D. \(\frac{2}{3}\)