GCSE Secondary Maths Age 13-17 - Algebra: Sequences - Explained

What is the formula for the Nth term of the arithmetic sequence discussed in the video?

• 6N + 5

• 5N + 6

• N + 6

• 6N - 5

How do you determine if 121 is part of the arithmetic sequence?

• By adding 6 repeatedly until reaching 121

• By solving the equation 6N + 5 = 121

• By subtracting 5 from 121 and checking divisibility by 6

• By multiplying 121 by 6 and adding 5

What is the result of solving the equation 6N + 5 = 121?

• N = 116

• N = 19.5

• N = 20

• N = 116/6

Why is 121 not part of the arithmetic sequence?

• Because 121 is not divisible by 6

• Because 121 is less than the first term

• Because 121 is not a whole number

• Because 116 divided by 6 is not an integer

What is required to earn full marks when explaining if a number is part of the sequence?

• A detailed explanation of the solution

• A simple yes or no answer

• A guess based on the sequence pattern

• A calculation showing the number is part of the sequence