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Class 10MathematicsArithmetic Progressions (AP)Word problems based on APsHardLevel 70
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In an online course (6) videos are uploaded in the first week and (3) more videos each next week. How many videos are uploaded in (15) weeks?

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Answer and explanation

Correct answer: (405)

The video numbers are (6,9,12,\ldots), and (S_{15}=405). Exam tip: take the number of weeks as the number of terms.

Related tags

ApWord-ProblemOnline-Course

Frequently asked questions

What is the correct answer to this question?

(405)

Why is this the correct answer?

The video numbers are (6,9,12,\ldots), and (S_{15}=405). Exam tip: take the number of weeks as the number of terms.

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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