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Option 1 : Z and Y

Seven friends:  T, U, V, W, X, Y and Z

i) Three persons sit between U and Y.

ii) U sits at one of the extreme ends.

iii) X sits third to the left of Y.

[ alt="F1 Shailesh.Y 23-05-20 Savita D11" src="//storage.googleapis.com/tb-img/production/20/05/F1_Shailesh.Y_23-05-20_Savita_D11.png" style="width: 235px; height: 69px;">

iv) V sits at the middle of the row.

v) W sits to the immediate left of T.

[ alt="F1 Shailesh.Y 23-05-20 Savita D12" src="//storage.googleapis.com/tb-img/production/20/05/F1_Shailesh.Y_23-05-20_Savita_D12.png" style="width: 235px; height: 70px;">

Hence, Z and Y are immediate neighbours of V.

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