Mathematics Past Questions And Answers
A binary operation * is defined by a * b = a\(^b\). If a * 2 = 2 - a, find the possible values of a.
- A. 1, -1
- B. 1, 2
- C. 2, -2
- D. 1, -2
The pie chart illustrate the amount of private time a student spends in a week studying various subjects. use it to answer the question below
If he sends \(2\frac{1}{2}\) hours week on science, find the total number of hours he studies in a week
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- A. \(3\frac{1}{3}\) hours
- B. 5 hours
- C. 8 hours
- D. 12 hours
Find the sum of the first 20 terms of the series 8, 12, 16, ....., 96
- A. 1400
- B. 1040
- C. 960
- D. 920
The area of a square field is 110.25m2. Find the cost of fencing it round at N75.00 per metre
- A. N1,575.00
- B. N3,150.00
- C. N4,734.30
- D. N8,268.75
The coefficient of the 5th term in the binomial expansion of \((1 + kx)^{8}\), in ascending powers of x is \(\frac{35}{8}\). Find the value of the constant k.
- A. 2
- B. \(\frac{1}{2}\)
- C. \(-\frac{1}{2}\)
- D. -2
The value of y for which \(\frac{1}{5}y + \frac{1}{5}< \frac{1}{2}y + \frac{2}{5}\) is
- A. \(y > \frac{2}{3}\)
- B. \(y< \frac{2}{3}\)
- C. \(y > -\frac{2}{3}\)
- D. \(y< -\frac{2}{3}\)
The bearing S40°E is the same as
- A. 040°
- B. 050°
- C. 130°
- D. 140°
In the diagram, MN//PO,< ∠ PMN = 112°, ∠ PNO = 129° and ∠ MPN = y°. Find the value of y
- A. 51°
- B. 54°
- C. 56°
- D. 68°
What must be added to the expression x2 - 18x to make it a perfect square?
- A. 3
- B. 9
- C. 36
- D. 81
If duty is levied at 25%, find the duty to be added to a bill of N80.
- A. N100
- B. N20
- C. N80
- D. N150