WAEC Further Mathematics 2024 Objective — Question 7

Question 7 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2024 Objective paper, with the correct answer and a full explanation.

7. If the nth term of a linear sequence (A.P) is (5n-2), find the sum of the first 12 terms of the sequence.

A. 120
B. 183
C. 366Correct
D. 732

Explanation

Un=5n-2. First term a=5(1)-2=3. 12th term U12=5(12)-2=58. S12=(12/2)[3+58]=6(61)=366.

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