Home ยป Past Questions ยป Mathematics ยป Jamb ยป 1990
1

Find the curved surface area of the frustrum in the figure

  • A. 16\(\pi \sqrt{10}\)cm2
  • B. 20\(\pi \sqrt{10}\)cm2
  • C. 24\(\pi \sqrt{10}\)cm2
  • D. 36\(\pi \sqrt{10}\)cm2
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2

In the figure, PQR is a semicircle. Calculate the area of the shaded region

  • A. 125\(\frac{2}{7}\)2
  • B. 149\(\frac{2}{7}\)cm2
  • C. 234\(\frac{1}{7}\)cm2
  • D. 267\(\frac{1}{2}\)cm2
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3

In the figure, YXZ = 30o, XYZ = 105o and XY = 8cm. Calculate YZ

  • A. 16\(\sqrt{2}\)cm
  • B. 8\(\sqrt{2}\)cm
  • C. 4\(\sqrt{2}\)cm
  • D. 22cm
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4

In triangles XYZ and XQP, XP = 4cm, XQ = 5cm and PQ = QY = 3cm. Find ZY

  • A. 8cm
  • B. 6cm
  • C. 4cm
  • D. 3cm
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5

In the figure, PS = QS = RS and QSR – 100o, find QPR

  • A. 40o
  • B. 50o
  • C. 80o
  • D. 100o
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6

What is the equation of the quadratic function represented by the graph?

  • A. y = x2 + x - 2
  • B. y = -x2 - x + 2
  • C. y = x2 - x - 2
  • D. y = -x2 - x + 2
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7

Find the probability that a number selected at random from 41 to 56 is a multiply of 9

  • A. \(\frac{1}{8}\)
  • B. \(\frac{2}{15}\)
  • C. \(\frac{3}{16}\)
  • D. \(\frac{7}{8}\)
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8

Two numbers are removed at random from the numbers 1, 2, 3 and 4. What is the probability that the sum of the numbers removed is even?

  • A. \(\frac{2}{3}\)
  • B. \(\frac{2}{15}\)
  • C. \(\frac{1}{2}\)
  • D. \(\frac{1}{4}\)
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9

Below are the scores of a group of students in a test
\(\begin{array}{c|c} Scores & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline \text{No. of students} & 1 & 4 & 5 & 6 & x & 2\end{array}\)
If the average scores is 3.5, find the value of x

  • A. 1
  • B. 2
  • C. 3
  • D. 4
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10

The mean of ten positive numbers is 16. When another number is added, the mean becomes 18. Find the eleventh number

  • A. 3
  • B. 16
  • C. 18
  • D. 38
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11

4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16

  • A. 48o
  • B. 84o
  • C. 92o
  • D. 276o
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12

The locus of a point which moves so that it is equidistant from two intersecting straight lines is the?

  • A. perpendicular bisector of the two lines
  • B. angle bisector of the two lines
  • C. bisector of the two lines
  • D. line parallel to the two lines
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13

If the heights of two circular cylinders are in the ratio 2 : 3 and their base radii are in the ratio 9:8, What is the ratio of their volumes?

  • A. 27 : 32
  • B. 27 : 23
  • C. 23 : 32
  • D. 21 : 27
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14

A cylinder pipe, made of metal is 3cm thick.If the internal radius of the pope is 10cm.Find the volume of metal used in making 3m of the pipe.

  • A. 153\(\pi\)cm3
  • B. 207\(\pi\)cm3
  • C. 15 300\(\pi\)cm3
  • D. 20 700\(\pi\)cm3
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15

If Cos \(\theta\) = \(\frac{12}{13}\). Find \(\theta\) + cos2\(\theta\)

  • A. \(\frac{169}{25}\)
  • B. \(\frac{25}{169}\)
  • C. \(\frac{169}{144}\)
  • D. \(\frac{144}{169}\)
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16

Each of the interior angles of a regular polygon is 140ยฐ. How many sides has the polygon?

  • A. 9
  • B. 8
  • C. 7
  • D. 5
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17

Find the length of a side of a rhombus whose diagonals are 6cm and 8cm

  • A. 8cm
  • B. 5cm
  • C. 4cm
  • D. 3cm
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18

The angle of a sector of s circle, radius 10.5cm, is 48ยฐ, Calculate the perimeter of the sector

  • A. 8.8cm
  • B. 25.4cm
  • C. 25.6cm
  • D. 29.8cm
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19

At what value of x is the function x\(^2\) + x + 1 minimum?

  • A. -1
  • B. \(-\frac{1}{2}\)
  • C. \(\frac{1}{2}\)
  • D. 1
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20

Find the sum of the first 18 terms of the progression 3, 6, 12……

  • A. 3(217 - 1)
  • B. 3(218 - 1)
  • C. 3(218 + 1)
  • D. 3(217 - 1)
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21

Find the sum of the first twenty terms of the progression log a, log a2, log a3…..

  • A. log a20
  • B. log a21
  • C. log a200
  • D. log a210
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