Answer: \(n = 16\), \(t_{16} = -21\)
First A.P.: \(a = 9, d = -2\). Second A.P.: \(a = 24, d = -3\).
\[9 + (n - 1)(-2) = 24 + (n - 1)(-3)\]\[(n - 1)(-2 + 3) = 15\]\[n - 1 = 15,\ n = 16\]\[t_{16} = 9 + 15(-2) = -21\]1 answer
Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
Report
Was this answer helpful?
Thanks for the feedback.
Sign up free to save answers and ask your own doubts
Your answer
Log in or create a free account to answer this question.