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Subjects
Class 10MathematicsArithmetic Progressions (AP)Finding the $n$th term of an APEasyLevel 64

In a school hall, the first row has (12) chairs and each next row has (3) more chairs. How many chairs will be in the (15)th row?

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Answer and explanation

Correct answer: (54)

Here (a=12), (d=3), so (a_{15}=12+14\times3=54). In word problems, treat rows as terms.

Tags

ap word problemnth termchairs

Frequently asked questions

What is the correct answer to this question?

(54)

Why is this the correct answer?

Here (a=12), (d=3), so (a_{15}=12+14\times3=54). In word problems, treat rows as terms.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Finding the $n$th term of an AP.

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