who is fibber ?
Level
pending
Four kids. A, B, C, D have statement :
A : B, C, D are girls.
B : One of A, C, D is boy.
C : One of A and B is lie.
D : All of kids are true.
The sum of true kids are......
3
2
1
0
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
It could be one of these situations :
1) Boy A & girl B being truthful while girl C & girl D being deceptive, or
2) Girl A & girl C being truthful while girl B & girl D being deceptive, or
3) Girl B & boy C being truthful while girl A & girl D being deceptive, or
4) Girl B & girl C being truthful while girl A & boy D being deceptive.
A says that the rest are all girls.
B says that one of the others is a boy.
C says that there's a liar between A & B.
D says that there are no liars among all of them.
C & D are telling 2 contradictory things, so one of them must be lying while the other being truthful, therefore it must be D who definitely lied with their too confident & too positive take on things.
Between the other 3, C accused one of the other two, so one of them must be lying somehow. If one of A or B lied, then C AND that other one must be telling the truth. If both A AND B are truthful, then it must be C who lied.
In conclusion, we have :
✓ a constant liar D
✓✓ a fixed girl B
✓✓✓ 2 truthful statements in any situation