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Mathematics Past Questions

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516
A sales girl gave a change of N1.15 to a customer instead of N1.25. Calculate her percentage error
  • A. 10%
  • B. 7%
  • C. 8.0%
  • D. 2.4%
  • E. 10%
View Answer & Discuss (2) WAEC 1988
517
What is the probability of having an odd number in a single toss of a fair die?
  • A. 1/6
  • B. 1/3
  • C. 1/2
  • D. 2/3
  • E. 5/6
View Answer & Discuss WAEC 1988
518
A water tank is made with a right-angled trapezium - shaped vertical cross-section so that when it is placed on sloping ground the top of the tank is level. The dimension are given in the diagram above
If the tank is completely filled with water, how many cubic metres can it hold?
  • A. 66m3
  • B. 84m3
  • C. 132m3
  • D. 168m3
  • E. 264m3
View Answer & Discuss (4) WAEC 1988
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519

A water tank is made with a right-angled trapezium - shaped vertical cross-section so that when it is placed on sloping ground the top of the tank is level. The dimension are given in the diagram above
By what number will you multiply your answer in 22 above to determine the capacity of the tank in liters?

  • A. 1/10
  • B. 1
  • C. 10
  • D. 100
  • E. 1000
View Answer & Discuss (6) WAEC 1988
520
Evaluate log106 + log1045 - log1027 without using logarithm tables
  • A. o
  • B. 1
  • C. 1.1738
  • D. 1.3802
  • E. 10
View Answer & Discuss (5) WAEC 1988
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