Eight students, 1 to 8, are sitting around a circular table facing the centre. 1 is the immediate neighbour of both 8 and 2. 3 is sitting second to the right of 1. 1 is sitting second to the right of 7. 5 is the immediate neighbour of 6 and 4. How many students were sitting between 5 and 1?

Eight students, 1 to 8, are sitting around a circular table facing the centre.

1 is the immediate neighbour of both 8 and 2.

3 is sitting second to the right of 1.

1 is sitting second to the right of 7.

5 is the immediate neighbour of 6 and 4.

3 students sitting between 5 and 1.

Thus, correct answer is (b)