Instructions

Read the following:

Six students P, Q, R, S, T and U sit on the ground at the vertices of a regular hexagon. P is neither adjacent to Q nor R. S is neither adjacentto R nor T. Q, R are adjacent. U is in the middle of S and R. Onthe basis of the information given above answer the questions.

Question 138

Which of the following is not a pair of neighbours?

Solution

Possible 2 arrangements:


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