WAEC Further Mathematics 2023 Objective — Question 26

Question 26 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2023 Objective paper, with the correct answer and a full explanation.

How many three-digit numbers can be formed from the digits 2, 3, 4, 5, 6, 7 and 8 if repetition is not allowed?

A. 420
B. 210Correct
C. 210 (as printed)
D. 35

Explanation

With 7 digits and no repetition: first digit 7 choices, second digit 6 choices, third digit 5 choices, giving 7x6x5=210 three-digit numbers.

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