1.

What should be added to $$ {10 over 11} $$ to get the sum $$ {11 over 10} $$?

A. $$ {1 over 55}$$
B. $$ {2 over 11}$$
C. $$ {21 over 110}$$
D. $$ {1 over 5}$$
Answer» D. $$ {1 over 5}$$


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