Nine friends M, N, O, P, Q, R, S, T, and U are sitting in a row facing South, not necessarily in the same order.
U is to the left of M and at the third place at the left of N. T is at the end of the row. Q is between O and P. O is at the third place at the right of T. S is immediate right of O. Who is sitting between M and N?

A, B, C, D, W, X and Y are sitting around a circular table facing the centre of the table. Only two people sit between Y and X when counted from the right of Y. Only three people sit between A and B when counted from the right of B. X sits to the immediate right of B. C sits to the immediate right of D. Who sits fourth to the right of W?

P, Q, R, S, T, U and V are sitting in a straight line, facing north. S is sitting second to the left of R. U is sitting fourth to the right of S. Only one person is sitting between P and V. Q is sitting second to the right of V. Only one person is sitting between Q and T. How many people are sitting between S and T?

A, B, C, D, E and F are sitting around a circular table, facing the centre. B sits third to the right of C. D sits to the immediate left of E. D is not an immediate neighbour of C. F sits to the immediate right of A. The position of how many persons will remain unchanged if all persons are arranged in the English alphabetical order in clockwise direction starting from A (including A)?

Seven friends, D, E, F, U, V, W and X, are sitting in a straight line, facing north. No one sits to the right of D. Only three people sit between D and F. Only two people sit between F and E. X sits third to the left of V. W sits to the immediate right of V. How many people sit between U and E?

Six people, A, B, C, D, E and F, are sitting in a row, facing north. F sits to the immediate left of A. C sits third to the left of D. C is an immediate neighbour of A. B sits to the immediate left of E. How many people sit between E and C?

A, B, C, D, E, and F are sitting around a circular table facing the centre. A sits third to the left of F. D is an immediate neighbour of both B and F. C sits to the immediate left of A. Who sits to the immediate right of F?

A, B, C, D, E, F, G and H are sitting around a circle at an equal distance facing the centre of the circle.
There are two persons between ‘F’ and ‘H’.
‘G’ is immediate neighbour of neither ‘A’ nor ‘B’.
‘B’ sits third to the left of ‘A’.
‘A’ sits second to the left of ‘H’.
‘D’ sits second to the left of ‘G’.
‘E’ and ‘F’ are neighbours.
Who is sitting immediate right of ‘G’?

​In the following number sequence, find out how many times ‘7, 5 and 3’ have appeared together in the same order?
7 3 7 5 3 7 5 7 5 3 7 5 7 5 3 7 5 3

P, Q, R, S, T, U, V and W are sitting in a line facing North, not necessarily in the same order. ‘W’ is on the immediate right of ‘S’. ‘Q’ is on the immediate left of ‘T’. There are three persons between ‘Q’ and ‘W’. ‘P’ is adjacent to ‘U’. ‘V’ is second to the left of ‘W’. ‘P’ and ‘Q’ are not at the ends. ‘R’ is on the immediate right of ‘U’. Who is at the left end of the line?