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7 replies to this topic

#1 jremoletesilerio

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Posted 19 February 2008 - 04:30 AM

Your mother has seven children. The names of six children are Bobby, Benny, Billy, Brenda, Bellinda, and Betsy.
-Bobby and Billy say, "Our brother, Benny, is always truthful. He always speaks the truth."
-Brenda and Bellinda say, "Our brothers, Bobby and Billy, are always liars. They always speak in lies."
-Benny says, "My sisters, Bella and Betsy, are always truthful. They always speak the truth."
Note: Bobby, Benny, and Billy are male. Brenda, Bellinda, and Betsy are female. All the children are related by blood by the same mother.

Who are the liars? And Who are truthful?

...These questions are very tricky. :D
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#2 Aatif

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Posted 19 February 2008 - 06:44 AM

Your mother has seven children. The names of six children are Bobby, Benny, Billy, Brenda, Bellinda, and Betsy.
-Bobby and Billy say, "Our brother, Benny, is always truthful. He always speaks the truth."
-Brenda and Bellinda say, "Our brothers, Bobby and Billy, are always liars. They always speak in lies."
-Benny says, "My sisters, Bella and Betsy, are always truthful. They always speak the truth."
Note: Bobby, Benny, and Billy are male. Brenda, Bellinda, and Betsy are female. All the children are related by blood by the same mother.

Who are the liars? And Who are truthful?

...These questions are very tricky. :D


Spoiler for Ambiguous ...

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#3 brhan

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Posted 19 February 2008 - 04:32 PM

Are Bella and Bellinda the same person???
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#4 niner

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Posted 19 February 2008 - 07:08 PM

Your mother has seven children. The names of six children are Bobby, Benny, Billy, Brenda, Bellinda, and Betsy.
-Bobby and Billy say, "Our brother, Benny, is always truthful. He always speaks the truth."
-Brenda and Bellinda say, "Our brothers, Bobby and Billy, are always liars. They always speak in lies."
-Benny says, "My sisters, Bella and Betsy, are always truthful. They always speak the truth."
Note: Bobby, Benny, and Billy are male. Brenda, Bellinda, and Betsy are female. All the children are related by blood by the same mother.

Who are the liars? And Who are truthful?

...These questions are very tricky. :D


You sir are a liar, I have one sister and her name is not listed above :D
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#5 storm

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Posted 20 February 2008 - 05:37 AM

Spoiler for Two solutions

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#6 eKid

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Posted 20 February 2008 - 07:09 AM

Your mother has seven children. The names of six children are Bobby, Benny, Billy, Brenda, Bellinda, and Betsy.
-Bobby and Billy say, "Our brother, Benny, is always truthful. He always speaks the truth."
-Brenda and Bellinda say, "Our brothers, Bobby and Billy, are always liars. They always speak in lies."
-Benny says, "My sisters, Bella and Betsy, are always truthful. They always speak the truth."
Note: Bobby, Benny, and Billy are male. Brenda, Bellinda, and Betsy are female. All the children are related by blood by the same mother.

Who are the liars? And Who are truthful?

...These questions are very tricky. :D



Brenda & Bellinda are liars ... all the remaining speak truth
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#7 Aaron Burr

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Posted 21 February 2008 - 01:45 AM

Are Bella and Bellinda the same person???


Yes, it is simply a nickname. Just like Peg is derived from Peggy (or more correctly Margaret but you get the point).

I'm gonna live forever, or die trying
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#8 Aatif

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Posted 21 February 2008 - 02:18 AM

Yes, it is simply a nickname. Just like Peg is derived from Peggy (or more correctly Margaret but you get the point).

I'm gonna live forever, or die trying

I would say that its an assumption you are making on the name, NOT given in the problem. Bella can as well be another girls name.
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