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There are five buildings called $V$, $W$, $X$, $Y$ and $Z$ in a row (not necessarily in that order). $V$ is to the West of $W$. $Z$ is to the East of $X$ and the West of $V$. $W$ is to the West of $Y$. Which is the building in the middle?

1. $V$
2. $W$
3. $X$
4. $Y$

Ans: A. V

Given order: (West on left)
$VW,\quad XZ, \quad ZV,\quad WY$

Considering them together:
$XZ,\quad ZV \implies XZV$
$VW, \quad WY\implies VWY$
$XZV, \quad VWY \implies XZVWY$

So, $V$ is the building in the middle.

Order is as foloows:

Y   W   V   Z   X

V is in middle.

hope it might help.........

V is in the Middle.
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