Question

what is the common difference of the following arithmetic sequence?
102, 100, 98, 96.
i'm not sure if it is 2 or -2

Answer 1

100-102 = -2

Answer 2

The common difference is the second term - first term, or third term - second term, or fourth term - third term, etc.

Answer 3

if u start from left its 2 but if u start from right its -2 the common difference.

Answer 4

i will go for -2

Answer 5

You do NOT take the first term - second term...as I said the second term - first term.

Answer 6

look at your numbers...they are decreasing, therefore, it would be -2