Question

Using Euler's formula, find $V$ if $E=10,F=6$.

Answer 1

By, Euler's formula, we know that
$V-E+F=2$
Here, $E=10$ and $F=6$
$\Rightarrow V-10+6=2$

$\Rightarrow V=2+4$
$\Rightarrow V=6$