WAEC SSCE - General Mathematics - 1995 (Objective)

If R = [2, 4, 6, 7] and S = [1, 2, 4, 8], then R∪S equal

The mean of 20 observations in an experiment is 4, lf the observed largest value is 23, find the mean of the remaining observations.

By selling some crates of soft drinks for N600.00, a dealer makes a profit of 50%. How much did the dealer pay for the drinks?

What is the mode of the numbers 8, 10, 9, 9, 10, 8, 11, 8, 10, 9, 8 and 14?

Solve the following simultaneous equations: x+ y = 3/2; x - y = 5/2 and use your result to find the value of 2y + x

Find the total surface area of solid circular cone with base radius 3cm and slant height 4cm. [Take π = 22/7]

Use the graph of y = 3x\(^2\) + x - 7 above to answer the question

Find the roots of the equation y=3x\(^2\) + x - 7

In the diagram above, the value of angles b + c is

A hollow sphere has a volume of kcm3 and a surface area of kcm2. Calculate the diameter of the sphere.

Use the graph of y = 3x\(^2\) + x - 7 above to answer the question

What is the minimum value of y?

If log\(_{10}\) x = \(\bar{2}.3675\) and log\(_{10}\) y = \(\bar{2}.9738\), what is the value of x + y, correct lo three significant figures?

Which of the following angles is an exterior angle of a regular polygon?

In ?ABC above, BC is produced to D, /AB/ = /AC/ and ?BAC = 50^o. Find ?ACD

The diagram above shows a cone with the dimensions of its frustrum indicated. Calculate the height of the cone.

In the diagram above, PQ is parallel to TU, ?PQR = 50°, ?QRS = 86° and ?STU = 64°. Calculate the value of x.

The angle of a sector of a circle is 108°. If the radius of the circle is 31/2cm, find the perimeter of the sector

Solve the equation (x +2)(x - 7) = 0

A water tank of height \(\frac{1}{2}\) m has a square base of side \(1\frac{1}{2}\) m. lf it is filled with water from a water tanker holding 1500 litres, how many litres of water are left in the water tanker? [1000 litres = 1m\(^3\)]

Solve the inequality: \(\frac{1}{3}(2x - 1) < 5\)

A 120° sector of a circle of radius 21cm is bent to form a cone. What is the base radius of the cone?

Factorize the expression x(a - c) + y(c - a)

The diagonals AC and BD of a rhombus ABCD are 16cm and 12cm long respectively. Calculate the area of the rhombus.

In the diagram above, AB//CD, the bisector of ?BAC and ?ACD meet at E. Find the value of ?AEC

Without using tables, find the value of \(\frac{\sin 20°}{\cos 70°} + \frac{\cos 25°}{\sin 65°}\)

Solve the equation 3x\(^2\) + 25x -18 = 0

In the diagram above, ?PRQ = 90°, ?QPR = 30° and /PQ/ = 10 cm. Find y.

In the diagram above, AB//CD. What is the size of the angle marked x?

Find the median of the following numbers 2.64, 2.50, 2.72, 2.91 and 2.35.

In the diagram above, AO is perpendicular to OB. Find x

If \(y \propto \frac{1}{x^2}\) and x = 3 when y = 4, find y when x = 2.

In the diagram above. |AB| = 12cm, |AE| = 8cm, |DCl = 9cm and AB||DC. Calculate |EC|

Find the value(s) of x for which the expression is undefined: \(\frac{6x - 1}{x^2 + 4x - 5}\)

In the diagram above; O is the centre of the circle and |BD| = |DC|. If ?DCB = 35°, find ?BAO.

A cylindrical container, closed at both ends, has a radius of 7cm and height 5cm [Take π = 22/7]

What is the volume of the container?

What is the smaller value of x for which x\(^2\) - 3x + 2= 0?

The positions of two countries P and Q are (15°N, 12°E) and (65°N, 12°E) respectively. What is the difference in latitude?

Which of the following could be the inequality illustrated in the sketch graph above?

A cylindrical container, closed at both ends, has a radius of 7cm and height 5cm [Take π = 22/7]

Find the total surface area of the container

The bearing of two points Q and R from a point P are 030° and 120° respectively, lf /PQ/ = 12 m and /PR/ = 5 m, find the distance QR.

Find (101\(_2\))\(^2\), expressing the answer in base 2.