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If (a_n=8n+5), what is the first term?
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Answer and explanation
Correct answer: 13
To find the first term, substitute n=1: \(a_1=8(1)+5=13\). Therefore, the correct answer is 13. The value 11 does not result from substituting n=1 in the given formula. Exam tip: to find the first term of a sequence, always put \(n=1\).
Frequently asked questions
What is the correct answer to this question?
13
Why is this the correct answer?
To find the first term, substitute n=1: \(a_1=8(1)+5=13\). Therefore, the correct answer is 13. The value 11 does not result from substituting n=1 in the given formula. Exam tip: to find the first term of a sequence, always put \(n=1\).
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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