Select the dice which cannot be formed on folding the given sheet.

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Correct option is C

Given:

Opposite side are given below as-

Option (a) can be made because all the surface are adjacent sides.
Option (b) can be made because all the surface are adjacent sides.
Option (c) can’t be made because a and f are opposite side.
Option (d) can be made because all the surface are adjacent sides.
Correct answer is (c).