If f, e and v represent the number of rectangular faces, number of edges and number of vertices respectively of cuboid then the value of $f + e + v$ is ____

20

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26

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30

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18

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Solution

The correct option is C $26$
For a cuboid ,
number of faces $f = 6$
number of edges $e = 12$
number of vertices $v = 8$
So, $f + e + v = 6 + 12 + 8 = 26$

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