If (a_n=2n+3), what is the fifth term?
Answer and explanation
Correct answer: 13
For the fifth term, substitute \(n=5\). Then \(a_5=2(5)+3=10+3=13\). Therefore, 13 is the correct answer. A value such as 15 may result from an error in multiplication or addition. Exam tip: in an \(n\)th-term question, first substitute the given term number carefully for \(n\).
Frequently asked questions
What is the correct answer to this question?
13
Why is this the correct answer?
For the fifth term, substitute \(n=5\). Then \(a_5=2(5)+3=10+3=13\). Therefore, 13 is the correct answer. A value such as 15 may result from an error in multiplication or addition. Exam tip: in an \(n\)th-term question, first substitute the given term number carefully for \(n\).
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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