Question

How to find nth term of a sequence in math?

Answer 1

Salutations!

To find the nth term, you will be needing a formula.


`a +(n-1) *d`

a stands for the first term (first number in the sequence)

d stands for the difference between two terms. (always remember to subtract from the 2nd term to the 1st term)

and the n is what we are going to find

so in your sequence: 5, 10, 15, 20

5 is a (as it is the first term)

d would be 5 ( 10 -5 =5)


`a+(n-1)*d`


`5+ (n-1) *5`


`5+5n-5`


`5n+0`

your nth term is
`5n+0`

Hope this helps!

Have a great day!