Question

If the 7th term of a sequence is 33 and the 10th term is 21, find the common difference d.

Answer 1

If the common difference is 'd', the difference between the 7th and 8th term is 'd'. Similarly the difference between the 7th and 9th term is '2d'... the difference between the 7th and 10th term is '3d'

Answer 2

So how would I find the 7th and 10th term to find d?

Answer 3

yes its given that 7th term is 33 and 10th term is 21.. now you need to find the difference between the two

Answer 4

d=4?

Answer 5

d = -4 because in series you always subtract the 7th term from 10th term, not the other way round

Answer 6

ahh

Answer 7

I appreciate it!!