JAMB Mathematics questions

497 questions with answers and explanations. Tap an option to check yourself.

1. Question 241· Matrices and determinants· JAMB

   P is a 2 × 3 matrix and Q is a 3 × 4 matrix. The product PQ is

   • Aa 2 × 4 matrix
   • Ba 3 × 3 matrix
   • Ca 4 × 2 matrix
   • Dnot defined

   Show answer

   Explanation and discussion

2. Question 242· Matrices and determinants· JAMB

   Find the determinant of the matrix [[2, 3], [1, 4]].

   • A11
   • B5
   • C8
   • D−5

   Show answer

   Explanation and discussion

3. Question 243· Matrices and determinants· JAMB

   If A = [[1, 2], [3, 4]] and B = [[0, 1], [1, 0]], find A + B.

   • A[[0, 2], [3, 0]]
   • B[[1, 2], [3, 4]]
   • C[[1, 3], [4, 4]]
   • D[[2, 1], [4, 3]]

   Show answer

   Explanation and discussion

4. Question 244· Matrices and determinants· JAMB

   A has rows (1, 2) and (3, 4). Find A².

   • Arows (2, 4) and (6, 8)
   • Brows (1, 4) and (9, 16)
   • Crows (7, 10) and (15, 22)
   • Drows (7, 15) and (10, 22)

   Show answer

   Explanation and discussion

5. Question 245· Matrices and determinants· JAMB

   Evaluate the determinant of [[3, −1], [2, 5]].

   • A17
   • B13
   • C−17
   • D7

   Show answer

   Explanation and discussion

6. Question 246· Mensuration· JAMB

   Find the total surface area of a closed cylindrical drum of diameter 14 cm and height 20 cm. [π = 22/7]

   • A3,080 cm²
   • B880 cm²
   • C1,034 cm²
   • D1,188 cm²

   Show answer

   Explanation and discussion

7. Question 247· Mensuration· JAMB

   A sector of a circle of radius 7 cm subtends an angle of 72° at the centre. Find its perimeter. (Take π = 22/7.)

   • A8.8 cm
   • B22.8 cm
   • C30.8 cm
   • D15.8 cm

   Show answer

   Explanation and discussion

8. Question 248· Mensuration· JAMB

   Find the volume of a hemisphere of radius 3 cm. (Take π = 22/7.)

   • A113.1 cm³
   • B56.6 cm³
   • C28.3 cm³
   • D18.9 cm³

   Show answer

   Explanation and discussion

9. Question 249· Mensuration· JAMB

   Find the area of a trapezium whose parallel sides are 8 cm and 12 cm and whose height is 5 cm.

   • A100 cm²
   • B50 cm²
   • C40 cm²
   • D25 cm²

   Show answer

   Explanation and discussion

10. Question 250· Mensuration· JAMB

    Find the area of a circle of radius 7 cm. (Take π = 22/7.)

    • A154 cm²
    • B44 cm²
    • C22 cm²
    • D308 cm²

    Show answer

    Explanation and discussion

11. Question 251· Mensuration· JAMB

    The area of a sector of a circle of radius 14 cm is 77 cm². Find the angle of the sector. (Take π = 22/7.)

    • A30°
    • B60°
    • C45°
    • D90°

    Show answer

    Explanation and discussion

12. Question 252· Mensuration· JAMB

    Find the total surface area of a cube of side 4 cm.

    • A16 cm²
    • B64 cm²
    • C96 cm²
    • D48 cm²

    Show answer

    Explanation and discussion

13. Question 253· Mensuration· JAMB

    Find the area of a sector of radius 6 cm and angle 60°. [π = 22/7]

    • A37.71 cm²
    • B6.29 cm²
    • C18.86 cm²
    • D113.14 cm²

    Show answer

    Explanation and discussion

14. Question 254· Mensuration· JAMB

    Find the curved surface area of a cone with base radius 7 cm and slant height 10 cm. (Take π = 22/7.)

    • A374 cm²
    • B154 cm²
    • C220 cm²
    • D440 cm²

    Show answer

    Explanation and discussion

15. Question 255· Mensuration· JAMB

    Find the total surface area of a closed cylinder of radius 7 cm and height 10 cm. (Take π = 22/7.)

    • A440 cm²
    • B748 cm²
    • C594 cm²
    • D1540 cm²

    Show answer

    Explanation and discussion

16. Question 256· Mensuration· JAMB

    The circumference of a circle is 44 cm. Find its radius. (Take π = 22/7.)

    • A22 cm
    • B14 cm
    • C3.5 cm
    • D7 cm

    Show answer

    Explanation and discussion

17. Question 257· Mensuration· JAMB

    Find the volume of a cylinder of radius 7 cm and height 10 cm. (Take π = 22/7.)

    • A3080 cm³
    • B440 cm³
    • C220 cm³
    • D1540 cm³

    Show answer

    Explanation and discussion

18. Question 258· Mensuration· JAMB

    Find the volume of a cuboid measuring 5 cm by 4 cm by 3 cm.

    • A60 cm³
    • B12 cm³
    • C47 cm³
    • D94 cm³

    Show answer

    Explanation and discussion

19. Question 259· Mensuration· JAMB

    How many litres does a full rectangular tank 2 m by 1.5 m by 1 m hold?

    • A30,000 litres
    • B300 litres
    • C3,000 litres
    • D4.5 litres

    Show answer

    Explanation and discussion

20. Question 260· Mensuration· JAMB

    Find the area of a parallelogram with base 9 cm and perpendicular height 4 cm.

    • A18 cm²
    • B36 cm²
    • C26 cm²
    • D13 cm²

    Show answer

    Explanation and discussion