WAEC Mathematics 2018 Objective — Question 37
Question 37 of 50 from the West African Examinations Council (WAEC) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
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If 3x ≡ 4(mod 5), find the least value of x.
- A. 1
- B. 2
- C. 3Correct
- D. 4
Explanation
3(3)=9, and 9 mod 5 = 4, so the least positive value of x satisfying the congruence is 3.
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