Question

2/5, 9/10, 7/5, 19/10, 12/5

Find the common difference between the terms of the following arithmetic sequence. ...?

Answer 1

those sequence could be rewritten as :

4/10 , 9/10 , 14/10 , 19/10 , 24/10

From that sequence, we can see that the difference is 5/10 or a 1/2

hope this helps