JAMB UTME - Mathematics - 1980
Question 1 Report
When a dealer sells a bicycle for N81 he makes a profit of 80%. What did he pay for the bicycle?
Answer Details
Question 2 Report
The ratio of the areas of similar triangles is necessarily equal to
Answer Details
Question 3 Report
Make c the subject of formula v = 1 - \(\frac{a}{5}\)(b + \(\frac{3c}{7}\))
Answer Details
Question 4 Report
The median of the set of numbers 4, 9, 4, 13, 7, 14, 10, 17 is
Question 5 Report
If x varies inversely as y, and y varies directly as the square root of z, and z varies directly \(\frac{1}{w^2}\) write down in words how x varies with w
Answer Details
Question 6 Report
In the figure, PS = SR and Rx is a tangent to the circle at R, < QRX is equal to 72o. Find
Answer Details
Question 7 Report
Simplify the given expression \(\sqrt{\frac{1 - cos x}{1 + cos x}}\)
Answer Details
Question 8 Report
What factor is common to all the expressions x2 - x, 2x2 + x - 1 and x2 - 1?
Answer Details
Question 9 Report
Solve the equation for the positive values of \(\theta\) less than 360o. 3 tan \(\theta\) + 2 = -1
Answer Details
Question 10 Report
Three numbers, x, y and z are connected by the relationships y = \(\frac{4x}{9}\) + 1. If x = 99, find z
Answer Details
Question 11 Report
(\(\frac{x^a}{x^b}\))a + b by (\(\frac{x^{a + b}}{x^{a - b}}\))\(\frac{a^2}{b}\)
Answer Details
Question 13 Report
If \(\theta\) = \(\frac{3}{2}\) and \(\theta\) is less than 90o, calculate tan \(\frac{(90 - \theta)}{cos^2\theta}\)
Answer Details
Question 14 Report
Rationalize the denominator of the given expression \(\frac{\sqrt{1 + a} - \sqrt{a}}{1 + a + \sqrt{a}}\)
Answer Details
Question 16 Report
A set of data contains a total of 130 items which are divided into six groups for display on a pie chart. If one group contains 26 items, then the sector representing this group on the pie chart contains an angle xo at the centre of the circle where x is
Answer Details
Question 17 Report
A man and his wife went to buy an article costing N400. The woman had 10% of the cost and the man 40% of the remainder. How much did they have altogether?
Answer Details
Question 19 Report
Write down the number 0.0052048 correct to three significant figures
Answer Details
Question 20 Report
Which of the formula below represents the general terms of the following set of numbers(-1, \(\frac{2}{3}\), -\(\frac{1}{2}\), \(\frac{2}{5}\)......) for n = 1, 2, 3, 4.......?
Answer Details
Question 21 Report
A pentagon has four of its angles equal. If the size of the fifth angle is 60o, Find the size of each of the four equal angles.
Answer Details
Question 22 Report
Find the area of the curved surface of a cone whose base radius is 6cm and whose height is 8cm. (take \(\pi\) = \(\frac{22}{7}\))
Answer Details
Question 23 Report
The expression x3 - 4x2 + cx + d is such that x + 1 is its factor, and its value is 1 when x is -2. Find c and d.
Answer Details
Question 24 Report
Evaluate \((2^{0} + 4^{-\frac{1}{2}})^{2}\)
Question 26 Report
A cylindrical motor of height 12cm has uniform thickness of 2cm. If the diameter of its outer cross section is 10cm, Find the volume of the constituent material. (take \(\pi\) = \(\frac{22}{7}\)
Answer Details
Question 28 Report
fG is a given straight line and H is a fixed point. The construction marks shown in the diagram indicate the
Answer Details
Question 29 Report
Find the missing numerator \(\frac{5}{x + 1}\) - \(\frac{3}{1 - x}\) - \(\frac{7x - 1}{x^2 - 1}\) = \(\frac{?}{x + 1}\).
Answer Details
Question 30 Report
List all integer values of x satisfying the inequality -1 < 2x - 5 \(\leq\) 5
Question 31 Report
In the figure, FGHJ is a circle of radius 3cm centre O. FOH, GOJ are perpendicular diameters. With G as centre of an arc of a circle is drawn to pass through F and H. Find the length of the perimeter of the lunar portion shaded.
Answer Details
Question 32 Report
Given log 2 = 0.69, log3 = 1, 10 and log7 = 1.90, all to a fixed base, find log 10.5 to the same base without using tables.
Question 33 Report
In the figure, PQ\\SR, ST\\, ST\\RQ, PS = 7cm, PT = 7cm, SR = 4cm. Find the ratio of the area QRST to the area of PQRS.
Answer Details
Question 34 Report
Simplify \(\frac{log_{10}8}{log_{10}4}\)
Question 35 Report
What will be the value of k so that the quadratic equation kx2 - 4x + 1 = 0 has two equal roots?
Answer Details
Question 38 Report
P and Q are fixed points and X is a variable point which moves so that angle PXQ = 45o. What is the locus of x?
Question 40 Report
In a school, there are 35 students in class 2A and 40 in class 2B. The mean score for class 2 in an English Literature examination is 60.0 and that for 2B in the same paper is 52.5. Find, to one place of decimal, the mean for the combined classes
Question 41 Report
If it is given that 5x + 1 + 5x = 150, then the value of x is equal to
Answer Details
Question 42 Report
In the figure, If PT is parallel to RS, PQ = PT, and angle SQT = 90o, Find x
Answer Details
Question 44 Report
Solve the system of equation 2x + y = 32, 33y - x = 27
Question 47 Report
In triangle FGB, < G = 90o, < H = 60o, while in triangle XYZ, < X = 60o and < Y = 30o. Form XYZ write down the ratio equal to \(\frac{FG}{FH}\)
Answer Details
Question 48 Report
A solid cylinder of radius 3cm has a total surface area of 36\(\pi\)cm2. Find its height
Question 49 Report
Find, correct to three significant figures, the value of \(\sqrt{41830}\).
