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What is the value of the following expression:
\(\dfrac1{\sqrt1+\sqrt2} +\dfrac1{\sqrt2+\sqrt3}+\dfrac1{\sqrt3+\sqrt4}+\cdots + \dfrac1{\sqrt{121}+\sqrt{121}} \)
A. 1
B. 9
C. 10
D. 11
E. 12
Answer: C
Source: GMAT Club Tests
\(\dfrac1{\sqrt1+\sqrt2} +\dfrac1{\sqrt2+\sqrt3}+\dfrac1{\sqrt3+\sqrt4}+\cdots + \dfrac1{\sqrt{121}+\sqrt{121}} \)
A. 1
B. 9
C. 10
D. 11
E. 12
Answer: C
Source: GMAT Club Tests
