CAT 2018 Slot 2 QA · Question 34

$\frac{1}{l o g _{2} 100}$ - $\frac{1}{l o g _{4} 100}$ + $\frac{1}{l o g _{5} 100}$ - $\frac{1}{l o g _{10} 100}$ + $\frac{1}{l o g _{20} 100}$ - $\frac{1}{l o g _{25} 100}$ + $\frac{1}{l o g _{50} 100}$ = ?

A.
0
B.
$\frac{1}{2}$
C.
-4
D.
10

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