Term of an arithmetic sequence from two given terms and the number of terms with a zero sum
Term of an arithmetic sequence from two given terms and the number of terms with a zero sum
6 marks
In an arithmetic sequence, the third term is \(33\) and the ninth term is \(15\).
- Find the 20th term of the sequence.[4]
When the first \(n\) terms of the sequence are added together, the total is \(0\).
- Find \(n\).[2]
Solution:
Solution locked
680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs tuition enrolment.
Create a free account to practise similar questions.
Answer:(a) \(-18\) (b) \(n=27\)
Need help? Join our JC Math tuition classes.
Learn more