Verbal Reasoning - Seating Arrangement - Discussion
Discussion Forum : Seating Arrangement - Seating Arrangement 10 (Q.No. 1)
Directions to Solve
In a class there are seven students (including boys and girls) A, B, C, D, E, F and G. They sit on three benches I, II and III. Such that at least two students on each bench and at least one girl on each bench. C who is a girl student, does not sit with A, E and D. F the boy student sits with only B. A sits on the bench I with his best friends. G sits on the bench III. E is the brother of C.
1.
How many girls are there out of these 7 students ?
Answer: Option
Explanation:
The number of girls is either 3 or 4.
Discussion:
51 comments Page 3 of 6.
Naren said:
1 decade ago
@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.
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.
Pranaya said:
7 years ago
'G' may be male/female so option 2 is correct because B, C, D are girls that is final.
Anish said:
1 decade ago
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.
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.
Bikram said:
1 decade ago
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?
Sid said:
1 decade ago
E is the the brother of C so how can E become a girl ?
R VIJAYAKUMAR said:
5 years ago
Yes, right, Agree @Anselam.
Prem Kumar said:
8 years ago
Indirectly given that A sits with HIS best friends which means A is a male and D is the only female in the 1st row.
Harsha said:
1 decade ago
How can we say that B is girl?
Anselam said:
1 decade ago
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.
Anselam said:
1 decade ago
In the question if it is said thad that atleast 1 boy sits on each bench then G would be a boy. Since nothing like this is mentioned it cannot be determined that G is a boy or girl. Also no his or her term is mentioned with G in any sentence of the question.
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