Question

What's the common difference of the sequence 0, 5, 10, 15, 20, . . . ?

A. d = –5
B. d = 3
C. d = –2
D. d = 5

Answer 1

The answer is D d=5 because it increases by 5 every time

Answer 2

Common difference of a sequence is difference between any two consecutive terms in the sequence.

So let's pick up any two consecutive terms,

0 and 5,

difference between 0 and 5 is 5-0 = 5

so common difference is 5