Find the sum : 1/2 + 1/6 + 112 + 120 + 130 + 142 + 156 + 172 + 190 + 1110 + 1132 = ?

Answer: Option B

Given expression,
 $$\text{ = }\left(1-\frac{1}{2}\right)$$   $$+$$ $$\left(\frac{1}{2}-\frac{1}{3}\right)$$   $$+$$ $$\left(\frac{1}{3}-\frac{1}{4}\right)$$   $$+$$ $$\left(\frac{1}{4}-\frac{1}{5}\right)$$   $$+$$ . . . . . $$+$$ $$\left(\frac{1}{11}-\frac{1}{12}\right)$$
$$\begin{array}{rl}& =\left(1-\frac{1}{12}\right)\\ & =\frac{11}{12}\end{array}$$