Jamb Mathematics Past Questions For Year 1980
Question 1
Find, correct to three significant figures, the value of \(\sqrt{41830}\).
- A. 205
- B. 647
- C. 2050
- D. 6470
- E. 64.7
Question 2
Write down the number 0.0052048 correct to three significant figures
- A. 0.005
- B. 0.0052
- C. 0.00520
- D. 5.2048
- E. 5204
Question 3
Evaluate \((2^{0} + 4^{-\frac{1}{2}})^{2}\)
- A. \(\frac{1}{4}\)
- B. \(\frac{5}{4}\)
- C. \(\frac{9}{4}\)
- D. 4
- E. 9
Question 4
Which of the following is NOT a factor of 12\(^{4}\) - 5\(^{4}\)?
- A. 7
- B. 13
- C. 17
- D. 49
- E. 169
Question 5
Rationalize the denominator of the given expression \(\frac{\sqrt{1 + a} - \sqrt{a}}{1 + a + \sqrt{a}}\)
- A. 1 + 2a - 2\(\sqrt{a(1 + a)}\)
- B. \(\sqrt{1(1 + a)}\)
- C. 2a - 2\(\sqrt{a(1 + a)}\)
- D. 1 + 2a - 2\(\sqrt{a + b}\)
