The 4th term of an A.P. is 13 while the 10th term is 31. Find
MATHEMATICS
JAMB 1995
The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term.
- A. 175
- B. 85
- C. 64
- D. 45
Correct Answer: C. 64
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