Jamb 1985 Mathematics Questions
Question 11:
Find the values of p for which the equation x2 - (p - 2)x + 2p + 1 = 0
- A (21, 0)
- B (0, 12)
- C (1, 2)
- D (3, 4)
- E (4, 5)
Question 12:
If \(e^{x} = 1 + x + \frac{x^{2}}{1.2} + \frac{x^{3}}{1.2.3} + ... \), find \(\frac{1}{e^{\frac{1}{2}}}\)
- A 1 - \(\frac{x}{2}\) + \(\frac{x^2}{1.2^3}\) + \(\frac{x^3}{2^4.3}\) + .........
- B 1 - \(\frac{x}{2}\) + \(\frac{x^2}{1.2^3}\) + \(\frac{x^4}{2.4.3}\) + ..
- C 1 + \(\frac{x}{2}\) + \(\frac{x^2}{1.2}\) + \(\frac{x^3}{1.2.3}\) + \(\frac{x^4}{1.23.4}\) + .........
- D 1 - x + \(\frac{x^2}{1.2^3}\) + \(\frac{x^3}{2^4.3}\) + .........
- E 1 + \(\frac{x}{2}\) + \(\frac{x^2}{1.2^3}\) + \(\frac{x^4}{1.2.6}\) + .........
Question 13:
\((\sqrt[4]{3} + \sqrt[4]{2})(\sqrt[4]{3} - \sqrt[4]{2})(\sqrt{3} + \sqrt{2})\) is equal to
- A 1
- B (\(\sqrt{2} + 4\sqrt{2}\))
- C (6\(\sqrt{2}\)
- D 8
Question 14:
In a restaurant, the cost of providing a particular type of food is partly constant and partially inversely proportional to the number of people. If cost per head for 100 people is 30k and the cost for 40 people is 60k, Find the cost for 50 people?
- A 15k
- B 20k
- C 50k
- D 40k
- E 45k
Question 15:
The factors of 9 - (x2 - 3x - 1)2 are
- A -(x - 4)(x + 1) (x - 1)(x - 2)
- B (x - 4)(x - 2) (x - 1)(x + 1)
- C -(x - 2)(x + 1) (x - 2) (x - 1)
- D (x - 2)(x + 2) (x - 1)(x + 1)