Mathematics 2019 Past Questions | JAMB

Study the following Mathematics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

11. If a fair coin is tossed 3 times, what is the probability of getting at least two heads?

  • A.\(\frac{2}{3}\)
  • B.\(\frac{4}{5}\)
  • C. \(\frac{2}{5}\)
  • D. \(\frac{}{2}\)

12. In how many ways can the word MATHEMATICIAN be arranged?

  • A. 6,794,800 ways
  • B. 2,664,910 ways
  • C. 6,227,020,800 ways
  • D. 129,729,600 ways

13. Given matrix M = \(\begin{vmatrix} -2 ~~~ 0 ~~~ 4 \\ 0 ~~~ -1 ~~~ 6 \\ 5 ~~~ 6 ~~~ 3 \end{vmatrix}\), find \(M^{T} + 2M\)

  • A.
    \(\begin{vmatrix} -4 & 2 & 1\\ 6 & 0 & 5 \\ 0 & 6 & 2 \end{vmatrix}\)
  • B.
    \(\begin{vmatrix} -6 & 0 & 13\\ 0 & -3 & 18 \\ 14 & 18 & 9 \end{vmatrix}\)
  • C.
    \(\begin{vmatrix} 5 & 2 & 6 \\ 0 & 1 & 1\\ 3 & 4 & -7 \end{vmatrix}\)
  • D.
    \(\begin{vmatrix} -4 & 0 & 8 \\ 0 & -2 & -16 \\ 10 & 12 & 6 \end{vmatrix}\)

14. 

Score (x)0123456
Freq (f)57371167

Find the mean of the data.

  • A. 3.26
  • B. 4.91
  • C. 6.57
  • D. 3.0

15.

Score (x)0123456
Freq (f)57371167

Find the variance

  • A. 42
  • B. 20
  • C. 70
  • D. 54

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

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

17. IMG 20191212 155439%20%282%29

From the cyclic quadrilateral MNOP above, find the value of x.

  • A. 16°
  • B. 25°
  • C. 42°
  • D. 39°

18.  If 4sin2x3=04sin2x3=0, find the value of x, when 0°  x  90°

  • A. 90°
  • B. 45°
  • C. 60°
  • D. 30°
 

19.

IMG 20191213 121834%20%282%29

In the figure above, |CD| is the base of the triangle CDE. Find the area of the figure to the nearest whole number.

  • A. 56 cm22
  • B. 24 cm22
  • C. 42 cm22
  • D. 34 cm2

20. The marks scored by 30 students in a Mathematics test are recorded in the table below:

Scores (Mark)012345
No of students437862

What is the total number of marks scored by the children?

  • A. 82
  • B. 15
  • C. 63
  • D. 75

 

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