Answer
a) 1
b) 2
c) 3
d) 9
Work Step by Step
a) 13 mod 3
13=3*4+1=1
b) -97 mod 11
-97=-9(11)+2=2
c) 155 mod 19
155=19*8+3=3
d) -221 mod 23
-221=-10(23)+9=9
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