If \(a_n=\frac{n}{3}\), what is the ninth term?
Answer and explanation
Correct answer: 3
To find the ninth term, substitute \(n=9\) in the rule: \(a_9=\frac{9}{3}=3\). Therefore, the correct answer is 3. Option 6 could result from incorrectly treating the operation as \(9-3\) instead of \(\frac{9}{3}\). Exam tip: first substitute the required value of \(n\) into the nth-term formula, then simplify.
Frequently asked questions
What is the correct answer to this question?
3
Why is this the correct answer?
To find the ninth term, substitute \(n=9\) in the rule: \(a_9=\frac{9}{3}=3\). Therefore, the correct answer is 3. Option 6 could result from incorrectly treating the operation as \(9-3\) instead of \(\frac{9}{3}\). Exam tip: first substitute the required value of \(n\) into the nth-term formula, then simplify.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: nth term.
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