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آخرین مطالب
نويسندگان
آموزش زبان انگلیسی ELC
English Learning Club




What is the color of the hat?

Mrs. Harrison has 6 lovely hats, 3 blue, 2 yellow and one pink. Alice, Betty, Cindy and Debbie are lined up as shown in the figure. Mrs. Harrison help them put the hats on them so they will not see what color hat they have on Alice can see what color of hats Betty, Cindy and Debbie are wearing.
Betty can see what color of hats Cindy and Debbie are wearing.
Cindy can see what color hat Debbie is wearing.
Debbie can not see any of the hat colors.
Mrs. Harrison ask them what color of the hat they are wearing. Alice said she can not tell. Betty said she can not tell either. Cindy also can not tell. However, Debbie was able to tell what color she was wearing after knowing that everyone else could not tell.

How did Debbie figure out what color she was wearing?


Read Solution
The only situation that Alice can tell what color she was wearing was that nobody was wearing blue hat. In this situation, she must had wearing a blue hat. We can be sure one of the girls in front of Alice was wearing blue hat.

Betty knew the above statement was true. If neither Cindy nor Debbie was not wearing blue hat, then she can be sure she was wearing blue hat. Obviously she saw a blue hat in front of her. This was why she could not tell.

Cindy had the same situation as Betty. She cold not tell because she saw a blue hat in front of her.

Debbie knew all the above facts. So she told Mrs. Harrison that she was wearing a blue hat
 



Horse, Donkey and Camel





A horse, a donkey and a camel were stolen. 3 suspects got caught: Robert, Scott and Tommy. All we know that each person stole one animal, but we do not know who stole which. Here are the investigation statements.

Robert said: Tommy stole the horse.
Scott said: Tommy stole the donkey.
Tommy said: They both were lying. I did not steal the horse or the donkey.

Later on, the police found out the man who stole the camel told a lie. The man who stole the horse told the truth. Can you find out who stole which?




Read Solution


The man who stole the horse told the truth. All we need to do is to find out who was that.
If Robert had stolen the horse he would not said: Tommy stole the horse. He should said: I stole the horse or Tommy did not steal the horse.

If Tommy had stolen the horse, he would not said: I did steal the horse.

So Scott stole the horse. What he said was true: Tommy stole the donkey. Then
Robert stole the camel and told a lie



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23 / 6برچسب:, :: ::  نويسنده : S.Alidadi