If the 9th term of an A.P is five times the 5th term, find the...
MATHEMATICS
JAMB 2002
If the 9th term of an A.P is five times the 5th term, find the relationship between a and d.
- A. 2a + 2 = 0
- B. 3a + 5d = 0
- C. a + 3d = 0
- D. a + 2d = 0
Correct Answer: C. a + 3d = 0
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