If (a_n=4n-3), which option gives the first term?
Answer and explanation
Correct answer: 1
To find the first term, substitute \(n=1\) in the formula: \(a_1=4(1)-3=1\). Therefore, 1 is the correct option. Option 3 does not result from substituting \(n=1\); it may be chosen by confusing it with the constant part of the expression. Exam tip: For the first term of any sequence, put \(n=1\).
Frequently asked questions
What is the correct answer to this question?
1
Why is this the correct answer?
To find the first term, substitute \(n=1\) in the formula: \(a_1=4(1)-3=1\). Therefore, 1 is the correct option. Option 3 does not result from substituting \(n=1\); it may be chosen by confusing it with the constant part of the expression. Exam tip: For the first term of any sequence, 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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