All values are integers in the following:

1.) What are the values of q=27 div 6 and r=27 mod 6 ?

2.) What are the values of s=-27 div 6 and t=-27 mod 6 ?

3). Give two different values of m such that 1721 (mod m).

4.) For a,bZ(sub)8, calculate the values of c=a+(sub)8b and d=a(sub)8b for a=7 and b=5.