Understanding Arithmetic Series
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Beginner
Start here! Easy to understand
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Beginner Explanation
An arithmetic series is simply the sum of the terms of an arithmetic sequence. For example, the arithmetic series 2 + 5 + 8 + 11 + ... is derived from the arithmetic sequence 2, 5, 8, 11, ...
Practice Problems
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1
Quick Quiz
Single Choice Quiz
Beginner
What is the sum of the first 5 terms of the arithmetic series 2 + 5 + 8 + 11 + ...
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2
Real-World Problem
Question Exercise
Intermediate
Discount Offer
A toy shop is offering a discount on a toy car. The first car costs $10. The price of each subsequent car is $2 less than the previous one (if the price drops below $0, the shop gives you the surplus as credit). If a customer buys one car each day for a week, what is the customer's net spending?
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3
Thinking Challenge
Thinking Exercise
Intermediate
Think About This
Find the sum of the first 20 terms of the arithmetic series if the first term is 5 and the last term is 62.
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4
Challenge Quiz
Single Choice Quiz
Advanced
What is the sum of the infinite geometric series 4 + 2 + 1 + 0.5 + ...
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