Practice The 𝑛th Term Formula (2) - Arithmetic Sequences - IB 10 Mathematics – Group 5, Algebra
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The 𝑛th Term Formula

Practice - The 𝑛th Term Formula

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the 5th term of the sequence: 2, 4, 6, 8, ...?

πŸ’‘ Hint: Use the formula with π‘Ž = 2, 𝑑 = 2, and 𝑛 = 5.

Question 2 Easy

Find the 3rd term of the sequence: 10, 15, 20, ...

πŸ’‘ Hint: Identify the first term and common difference.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the formula to calculate the 𝑛th term of an arithmetic sequence?

πŸ’‘ Hint: Remember the components: first term, common difference, and term position.

Question 2

True or False: The common difference in an arithmetic sequence can be zero.

πŸ’‘ Hint: Think about what happens in a sequence where every term is the same.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

An arithmetic sequence has a first term of 7 and a common difference of 3. How many terms are required to reach a term greater than 100?

πŸ’‘ Hint: Set up the inequality: 7 + (n - 1) * 3 > 100.

Challenge 2 Hard

The 9th term of an arithmetic sequence is 45, and the 16th term is 72. Find the first term and the common difference.

πŸ’‘ Hint: Use the two equations from the nth term formula to create a system of equations.

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