​Six letters, M, N, O, P, Q and R are written on different faces of a dice. Three positions of this dice are shown here. Find the letter on the face opposite M.

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Logic: In these types of dice problems, we should write all three numbers in clockwise or anticlockwise from a fix common number.

M is common in second and third positions.

From second and third positions,

So, O is on opposite face of M.

Thus, correct option is (c).