Question #259761

What is 6 mod 9 + 11 mod 9 congruent to?

a) 8 mod 9

b) 6 mod 9

c) 7 mod 9

d) 0 mod 9


Expert's answer

6mod 9+11mod 9≡17mod 9=8mod 96 mod\ 9 + 11 mod\ 9\equiv17mod\ 9=8mod\ 9


Answer: a) 8 mod 9


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