Using Euler's formula find $V$ if $E = 18$ , $F = 8$ .

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Solution

Given, $E = 18$ , $F = 8$
We need to find value of $V$
Euler's formula $= F + V = E + 2$
$\Rightarrow$ $8 + V = 18 + 2$
$\Rightarrow 8 + V = 20$
$\Rightarrow$ $V = 20 - 8$
$\Rightarrow$ $V = 12$

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