Exercise
3 (mod 7) (5 (mod 7) + 6 (mod 7)) equals
0
1
2
3
4
5
6
modulo 7.
No
No
No
No
Yes
No
No
3 (mod 7) (5 (mod 7) + 6 (mod 7)) equals
0
1
2
3
4
5
6
modulo 7.