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

Which will be the (15)th term of the AP (30,27,24,21,\ldots)?

Answer and explanation

Correct answer: (-12)

Here (d=-3), so (a_{15}=30+14(-3)=-12). Watch the sign carefully in a decreasing AP.

Tags

apnth termnegative common difference

Frequently asked questions

What is the correct answer to this question?

(-12)

Why is this the correct answer?

Here (d=-3), so (a_{15}=30+14(-3)=-12). Watch the sign carefully in a decreasing AP.

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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