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Monday, 20 April 2026
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Mathematics Past Questions and Answers

Jamb 1979 Mathematics Questions

Question 16:
(3.2)2 - (1.8)2 equals
  • A 7.0
  • B 2.56
  • C 13.48
  • D 2.0
  • E 0.07
View Answer & Explanation
Question 17:
In \(\bigtriangleup\)PQR, PQ = 10cm, QR = 8cm and RP = 6cm, the perpendicular RS is drawn from R to PQ. Find the length of RS
  • A 4cm
  • B 32cm
  • C \(\frac{30}{7}\)
  • D \(\frac{40}{7}\)
  • E 4.8cm
View Answer & Explanation
Question 18:
After getting a rise of 15%, a man's new monthly salary is N345. How much per month did he earn before the increase?
  • A N330
  • B N396.75
  • C N300
  • D N293.25
  • E N360
View Answer & Explanation
Question 19:
In base ten, the number 101101 (base 2) equals
  • A 15
  • B 4
  • C 45
  • D 32
  • E 90
View Answer & Explanation
Question 20:
The annul profits of a transport business were divided between the partners A and B in the ratio 3 : 5. If B received N3000 more than A, the total profit was
  • A N5000
  • B N1800
  • C N12000
  • D N24000
  • E N8000
View Answer & Explanation