Find the 17term of the Arithmetic Progression (A.P):-6,-1,4
MATHEMATICS
WAEC 2022
Find the 17term of the Arithmetic Progression (A.P):-6,-1,4
- A. -91
- B. -86
- C. 74
- D. 79
Correct Answer: C. 74
Explanation
common difference d = -1 - [-6] → -1 + 6
d = 5; a = -6
T\(_n\) = a + (n-1)d
: T\(_{17}\) = -6 + (17 - 1) 5
→ -6 + (16)5
→ -6 + 80 = 74
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