Question

Eight students a,b,c,d,p,q,r and s stand in two rows 1and 2 each student in row 1faces another student in row2 which is the north of row 1 b stand opposite to s but an extreme end only one student between b and a ,who stands in same row and diagonally opposite to r,p stands to immediate right of q but not extreme end d is neighbour of A

Answer 1

Step-by-step explanation:

C is correct answer

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Answer 2

The final arrangement of the eight students would be:

• Row 2: $b,c,a,d$  or  $b,d, a,c$
• Row 1: $s,q,p,r$

Step-by-step explanation:

There are two rows 1 and 2, and students of row 2 are north to row 1.

Let the following be the arrangement:

• Row 2: $-,-,-,-$
• Row 1: $-,-,-,-$

Information 1: "b stand opposite to s but an extreme end"

• Row 2: $b,-,-,-$
• Row 1: $s,-,-,-$

Information 2: "only one student between b and a who stands in the same row"

• Row 2: $b,-,a,-$
• Row 1: $s,-,-,-$

Information 3: "a is diagonally opposite to r"

There are two possibilities for this

• Row 2: $b,-,a,-$
• Row 1: $s,r,-,-$ or $s,-,-,r$

Information 4: "p stands to the immediate right of q but not extreme end"

p and q are neighbors, thus, they should be present in Row 1

• Row 2: $b,-,a,-$
• Row 1: $s,r,q,p$ or $s,q,p,r$

but p is not on extreme end

So, the correct arrangement would be

• Row 2: $b,-,a,-$
• Row 1: $s,q,p,r$

Information 5: "d is neighbor of a"

Two possibilities are there for this arrangement

• Row 2: $b,-,a,d$ or $b,d, a,-$
• Row 1: $s,q,p,r$

Hence, the final arrangement can be:

• Row 2: $b,c,a,d$ or $b,d, a,c$
• Row 1: $s,q,p,r$