2\left(1-\dfrac{1}{2}\right)+3\left(1-\dfrac{1}{3}\right)+4\left(1-\dfrac{1}{4}\right)+\ldots+10\left(1-\dfrac{1}{10}\right)=
Answer Choices
A. 45
B. 49
C. 50
D. 54
E. 55
2\left(1-\dfrac{1}{2}\right)+3\left(1-\dfrac{1}{3}\right)+4\left(1-\dfrac{1}{4}\right)+\ldots+10\left(1-\dfrac{1}{10}\right)=
Answer Choices
A. 45
B. 49
C. 50
D. 54
E. 55