What is \(\dfrac1{1\cdot 2}+\dfrac1{2\cdot 3}+\dfrac1{3\cdot 4}+\dfrac1{4\cdot 5}+\dfrac1{5\cdot 6}+\dfrac1{6\cdot 7}+\dfrac1{7\cdot 8}+\dfrac1{8\cdot9}+\dfrac1{9\cdot 10}?\)
A. \(\dfrac25\)
B. \(\dfrac35\)
C. \(\dfrac7{10}\)
D. \(\dfrac{46}{55}\)
E. \(\dfrac9{10}\)
Answer: E
Source: Veritas Prep