WAEC Computer Studies 2025 Objective — Question 6
Question 6 of 50 from the West African Examinations Council (WAEC) Computer Studies 2025 Objective paper, with the correct answer and a full explanation.
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Which of the following statements about the Slide Rule are true? I. Multiplication that goes off the slide can be corrected by resetting the slide. II. Operations of addition can be carried out by directly adding two or more numbers together on the slide. III. Logarithm is used to transform the operations of multiplication and division to addition and subtraction.
- A. I and II only
- B. I and III onlyCorrect
- C. II and III only
- D. I, II and III
Explanation
Statement I is correct (resetting corrects overflow). Statement II is wrong (slide rules cannot directly perform addition/subtraction). Statement III is correct (the slide rule's principle is based on logarithms).
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