Jamb Mathematics Past Questions For Year 1990
Question 1
Simplify \(\frac{4\frac{3}{4} - 6\frac{1}{4}}{4\frac{1}{5} \text{ of } 1\frac{1}{4}}\)
- A. -7\(\frac{7}{8}\)
- B. \(\frac{-2}{7}\)
- C. \(\frac{-10}{21}\)
- D. \(\frac{10}{21}\)
Question 2
The H.C.F. of \(a^2+bx + ab^2x\) and \(a^2b - b^2\) is
- A. b
- B. a + b
- C. b(a \(\div\) b)
- D. abx(\(a^2 - b^2\))
Question 3
Correct 241.34(3 x 10-\(^3\))\(^2\) to 4 significant figures
- A. 0.0014
- B. 0.001448
- C. 0.0022
- D. 0.002172
Question 4
Simplify and express in standard form \(\frac{0.00275 \times 0.0064}{0.025 \times 0.08}\)
- A. 8.8 x 10\(^{-1}\)
- B. 8.8 x 10\(^{-2}\)
- C. 8.8 x 10\(^{-3}\)
- D. 8.8 x 10\(^{3}\)
Question 5
Simplify \(\sqrt{160r^2 + \sqrt{71r^4 + \sqrt{100r^8}}}\)
- A. 9r2
- B. 12\(\sqrt{3r}\)
- C. 13r
- D. \(\sqrt{13r}\)
