Find the 9th term of the arithmetic progression 18, 12, 6, 0, -6 .........
MATHEMATICS
WAEC 1996
Find the 9th term of the arithmetic progression 18, 12, 6, 0, -6 .........
- A. -54
- B. -30
- C. 30
- D. 42
Correct Answer: B. -30
Explanation
18, 12, 6, 0, -6, 12, -18, 24, -30
9th term = -30
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