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Class 10 Mathematics Arithmetic Progressions (AP)Word problems based on APsMediumLevel 70

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In a stair-like decoration the bottom row has (45) bulbs and each upper row has (3) fewer bulbs. How many bulbs are in the (8)th row?

Answer and explanation

Correct answer: (24)

The bulb numbers are (45,42,39,\ldots) and (a_8=24). Exam tip: keep the difference negative when moving upward.

Related tags

Ap Word-Problem Decreasing-Pattern

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What is the correct answer to this question?

(24)

Why is this the correct answer?

The bulb numbers are (45,42,39,\ldots) and (a_8=24). Exam tip: keep the difference negative when moving upward.

Which subject and chapter does this question cover?

This is a Class 10 Mathematics question. Chapter: Arithmetic Progressions (AP). Topic: Word problems based on APs.

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