1.

Eight students A, B, C, D, E, F, G and H sit around a circular table, equidistant from each other, facing the centre of the table, not necessarily in the same order. B and D sit neither adjacent to C nor opposite to C. A sits in between E and D and F sits in between B and H. Which one of the following is definitely correct?

UPSC - 2022

A.

B sits in between A and G

B.

C sits opposite to G

C.

E sits opposite to F

D.

None of the above

2.

Three persons A, B and C are standing in a queue not necessarily in the same order. There are 4 persons between A and B, and 7 persons between B and C. If there are 11 persons ahead of C and 13 behind A, what could be the minimum number of persons in the queue?

UPSC - 2022

3.

The letters A, B, C, D and E are arranged in such a way that there are exactly two letters between A and E. How many such arrangements are possible?

UPSC - 2022

4.

If 2 boys and 2 girls are to be arranged in a row so that the girls are not next to each other, how many possible arrangements are there?

UPSC - 2017

5.

Five people A, B, C, D and E are seated about a round table. Every chair is spaced equidistant from adjacent chairs.

(i) C is seated next to A

(ii) A is seated two seats from D

(iii) B is not seated next to A

On the basis of above information, which of the following must be true?

1. D is seated next to B

2. E is seated next to A

3. D and C are separated by two seats

Select the correct answer using the code given below:

UPSC - 2016

6.

Consider the following: A, B, C, D, E, F, G and H are standing in a row facing North.

B is not neighbour of G.

F is to the immediate right of G and neighbour of E.

G is not at the extreme end.

A is sixth to the left of E.

H is sixth to the right of C.

Which one of the following is correct in respect of the above?

UPSC - 2017

A.

C is to the immediate left of A.

B.

D is immediate neighbour of B and F.

C.

G is to the immediate right of D.

D.

A and E are at the extreme ends.