Verbal Reasoning - Seating Arrangement - Discussion

A sits on the bench I with 'his' best friends. E is the 'brother' of C. This means A & E are boys so by default D is a girl because atleast one girl sits on each bench.

How can we say that B is girl?

According to the question, A sits on the bench 1 and G sits on the bench 3. Since F the boy student sits with only B, so place F and B on the bench 2. Because F is a boy, B must be a girl. Given that, C (girl) can not sit with A, E and D so place it on bench 3.

Given that, A sits on the bench I with his best friends. Therefore more then two students are sitting on bench 1, which are A, E and D. Because A and D are boys, so E is a girl.

G may be a boy or girl.

Answer (b) is correct.

E is the the brother of C so how can E become a girl ?

But the question is still not clear that A, E and D has to b in the same bench. How could we derive to this conclusion, can anyone explain please?

Let me help you out.
There is 2 possible answers.

1)
A F B
E D
G C

OR

2)
A E D
F B
G C

In any arrangement we know C is a girl.
A is a boy as in question it is told "his friends".
E & F are boys .

Take 1st arrangement.
A, F boys & B shd be girl.
E a boy & D shd be girl.
G Can be girl or boy bt C is girl.
i.e Total 4 girls.

But similarly try 2 arrangement you will turn up with 3 girls.

Hence 3 or 4 girls.

@Anish.

F the boy student sits with only B(It means that FB can occupy only 2 row). Since we don't know whether G is he or she .. So no of girls could be 3 or 4.

Let me explain this answer.

1) A seat with "his" "friends"
i.e., A is boy and 1st bench has 3 students.

2) F seats "only" with B.
Given F is boy and i.e., B is girl.

3) G is 3rd bench remaining student is C.

So,
Males are f, e, a.

So answer is 3 or 4.

As per my conclusion G could be Male or female so answer B is right.

Since A is sitting with his best friends which means more than one so 3 people will be sitting on first bench. F is a boy so B has to be a girl as only two two students will sit on 2 and 3 bench. C can not sit on bench 1 and bench 2 is occupied by F and B so it sits on bench 3. Rest can be figured easily.