Answer: 1.6 is the common difference
Explanation:
Common difference of an arithmetic series is obtained by subtracting each next term by its previous term
Generally a,a+d,a+2d,a+3d ....,a+(n-1)d , here common difference is d .
therefore here we see that we get 1.6 if we take difference of the terms given .
here we can see that
4.4-2.8 = 6-4.4=7.6-6 = 1.6 is the common difference.