How to solve this?We have M_2(ZZ_3)second order matrix set with elements of ZZ_3.Determine the number of elements of the setM_2(ZZ_3).

1 Answer
Aug 13, 2017

81

Explanation:

Each element of M_2(ZZ_3) has 2*2=4 entries taken from ZZ_3 = { 0, 1, 2 }.

There is no restriction on combinations of entries, so there are a total of:

3^4 = 81

matrices in M_2(ZZ_3).