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Tuesday, 03 November 2026
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Mathematics Past Questions and Answers

Jamb 2012 Mathematics Questions

Question 21:
If \(\begin{vmatrix} 5 & 3 \\ x & 2 \end{vmatrix}\) = \(\begin{vmatrix} 3 & 5 \\ 4 & 5 \end{vmatrix}\), find the value of x
  • A 3
  • B 4
  • C 5
  • D 7
View Answer & Explanation
Question 22:
Given that I3 is a unit matrix of order 3, find |I3|
  • A -1
  • B O
  • C 1
  • D 2
View Answer & Explanation
Question 23:
The angles of a polygon are given by x, 2x, 3x, 4x and 5x respectively. Find the value of x.
  • A 24<sup style='font-size: smaller;'>o</sup>
  • B 30<sup style='font-size: smaller;'>o</sup>
  • C 33<sup style='font-size: smaller;'>o</sup>
  • D 36<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 24:
Calculate the volume of a cuboid of length 0.76cm, breadth 2.6cm and height 0.82cm.
  • A 3.92cm<sup style='font-size: smaller;'>3</sup>
  • B 2.13cm<sup style='font-size: smaller;'>3</sup>
  • C 1.97cm<sup style='font-size: smaller;'>3</sup>
  • D 1.62cm<sup style='font-size: smaller;'>3</sup>
View Answer & Explanation
Question 25:
The locus of a point equidistant from the intersection of lines 3x - 7y + 7 = 0 and 4x - 6y + 1 = 0 is a
  • A Line parallel to 7x + 13y + 8 = 0
  • B Circle
  • C Semicircle
  • D Bisector of the line 7x + 13y + 8 = 0
View Answer & Explanation