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WAEC Computer Studies 2021 Objective — Question 9

Question 9 of 50 from the West African Examinations Council (WAEC) Computer Studies 2021 Objective paper, with the correct answer and a full explanation.

9. The total possible combinations of input variables for a logic gate containing three input variables is

A. 3
B. 4
C. 8Correct
D. 12

Explanation

With 3 binary input variables, the number of combinations is 2³ = 8.

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