GCSE Secondary Maths Age 13-17 - Algebra: Arithmetic Sequence - Explained

The video tutorial covers arithmetic sequences, focusing on finding the Nth term. It begins by explaining how to identify the common difference in a sequence and derive the Nth term formula. The tutorial then addresses a problem where it checks if a specific number is part of a sequence by solving an equation. Finally, it provides exam tips, emphasizing the importance of understanding arithmetic sequences for GCSE exams.

What is the common difference in the arithmetic sequence 6, 10, 14, 18?

• 6

• 4

• 2

• 8

What is the expression for the Nth term of the sequence 6, 10, 14, 18?

• 6N + 2

• 4N + 2

• 2N + 4

• 8N + 4

In the sequence with the Nth term 3N + 5, what is the value of N when the term is 108?

• 35

• 34.5

• 34.33

• 34

Is 108 a term in the sequence defined by 3N + 5?

• No, because 108 is not divisible by 5

• No, because N is not a whole number

• Yes, because N is a whole number

• Yes, because 108 is divisible by 3

Why is it important to understand the Nth term of arithmetic sequences?

• They are often used in exams

• They are rarely used in exams

• They are only used in advanced mathematics

• They are not relevant to real-world problems