10 people are sitting around a circular table, each one shaking a hand with everyone else except from the people sitting on either side of him. Find the number of handshakers.

There an n persons sitting around a circular table. Each person shakes hands with everybody except the person sitting on both sides of him. The total number of hand shakes are 90. Then find n.

Four people sit round a circular table and each person will roll a normal six sided die once. The probability that no two people sitting next to each other will roll the same number is N/(1296) then N is divisible by : 3 (b) 7 (c) 9 (c) 7^2

Direction: Read the following information carefully and answer the questions that follow. There are eight people sitting around a circular table facing the centre. There are ten chairs around the table on which eight persons are sitting and two are vacant. There are only two chairs between A and B (either from left or right). There are only four chairs between B and D (either from left or right). Q sits opposite to A. C sits between A and D. Only one person sits between C and S. P sits immediate to the left of B. R sits opposite to P. How many persons are sitting between R and S when counted to the right of R?

Direction: Read the following information carefully and answer the questions that follow. There are eight people sitting around a circular table facing the centre. There are ten chairs around the table on which eight persons are sitting and two are vacant. There are only two chairs between A and B (either from left or right). There are only four chairs between B and D (either from left or right). Q sits opposite to A. C sits between A and D. Only one person sits between C and S. P sits immediate to the left of B. R sits opposite to P. Who sits adjacent to both P and A?

Direction: Read the following information carefully and answer the questions that follow. There are eight people sitting around a circular table facing the centre. There are ten chairs around the table on which eight persons are sitting and two are vacant. There are only two chairs between A and B (either from left or right). There are only four chairs between B and D (either from left or right). Q sits opposite to A. C sits between A and D. Only one person sits between C and S. P sits immediate to the left of B. R sits opposite to P. Who sits second to the right of D?

Direction: Read the following information carefully and answer the questions that follow. There are eight people sitting around a circular table facing the centre. There are ten chairs around the table on which eight persons are sitting and two are vacant. There are only two chairs between A and B (either from left or right). There are only four chairs between B and D (either from left or right). Q sits opposite to A. C sits between A and D. Only one person sits between C and S. P sits immediate to the left of B. R sits opposite to P. Which of the following statements is true?

Eight people - J, K, L, M, N, O, P and Q are sitting around a circular table facing the centre, not necessarily in the same order. O is sitting third to the right of M. There is only one person sitting between M And J. There are only three people between J and K. P is an immediate neighbour of J. There are only three people between P and L. N is second to the right of P. Who is sitting second to the left of the one who is sitting second to left of Q ?