In the Group G=(2,4,6,8) under multiplication modulo 10, the identity element is?
In the Group G=(2,4,6,8) under multiplication modulo 10, the identity element is?
Explanation
The identity element e should satisfy ae = ea = a for all a in G.
Here, e = 6 works since 26=2, 46=4, 66=6, 86=8.