Mathematics Past Questions And Answers
At simple interest, a man made a deposit of some money in the bank. The amount in his bank account after 10 years is three times the money deposited. If the interest rate stays the same, after how many years will the amount be five times the money deposited?
- A. 15 years
- B. 25 years
- C. 20 years
- D. 30 years
A binary operation \(\Delta\) is defined on the set of real numbers, R, by \(a \Delta b = \frac{a+b}{\sqrt{ab}}\), where a\(\neq\) 0, b\(\neq\) 0. Evaluate \(-3 \Delta -1\).
- A. \(-4\sqrt{3}\)
- B. \(\frac{-4\sqrt{3}}{3}\)
- C. \(\frac{-3\sqrt{3}}{4}\)
- D. \(\frac{-3\sqrt{3}}{4}\)
A trader brought a radio for #36 and sold it for #45. Express the profit as a percentage of the cost.
- a. 25%
- b. 30%
- c. 35%
- d. 40%
(a) Using a ruler and a pair of compasses only, construst \(\Delta\) ABC in which |AB| = 7cm, |BC| = 5cm and < ABC = 75°. Measure |AC|.
(b) In (a) above, locate by construction, a point D such that CD is parallel to AB and D is equidistant from points A and C. Measure < BAD.
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What is Roman numeral of 19?
- (a) XX
- (b) IX
- ( c)XIX
- (d) D
If 9(x - \(\frac{1}{2}\)) 3x2
- A. \(\frac{1}{2}\)
- B. 1
- C. 2
- D. 3
If the interest on N150.00 for 21/2 years is N4.50, find the interest on N250.00 for 6 months at the same rate
- A. N1.50
- B. N7.50
- C. N15.00
- D. N18.00
How much is N3,000 worth in US$ if the exchange rate is US$ 1 = N120?
- a. US$ 65
- b.US$ 55
- c. US$ 45
- d. US$ 35
Find the median of the set: 15,24,27,28,28,39,44,47,61,77,88
- A. 41
- B. 28
- C. 44
- D. 39
Given that r = \( \sqrt \frac{3v}{\pi h} \), make v the subject of the formula
- A. v = 3 \(πr^2\) h
- B. v = \(\frac{πrh}{3}\)
- C. v = \(\frac{πr^2h}{3}\)
- D. v = 3πrh