Question

is this arithmetic ? if so, what's the common difference ?
8, 12, 17, 23

A) no
B) yes; 4
C) yes; 5
D) yes; 6

Answer 1

so if it is arithmetic... it it increasing by the same amount each time..

the amount it increases by is the common difference.

Answer 2

so it's not, because the difference is different each time ?

Answer 3

that's correct

Answer 4

THANK YOU !!! ^_^