What is the value of $\frac{1}{1}+\frac{2}{2}+\frac{3}{3}$ ?
(A) 1
(B) 0
(C) 3
(D) 9
(E) 10
Since each of the three fractions is equal to 1 , then $\frac{1}{1}+\frac{2}{2}+\frac{3}{3}=1+1+1=3$.

ANSwER: $(\mathrm{C})$