Question 23
Sequences and SeriesFind the nth term of the linear sequence (A.P) (5y + 1), (2y + 1), (1 − y), …
- A.(8 + 3n)y + 1
- B.8y + 3n + 1
- C.(8 − 3n)y + 1
- D.8y − 3n + 1
Show the answer and explanation
Answer: C ((8 − 3n)y + 1)
Explanation
d = (2y + 1) − (5y + 1) = −3y. Tₙ = 5y + 1 + (n − 1)(−3y) = (8 − 3n)y + 1.