in a zoo there are(adsbygoogle = window.adsbygoogle || []).push({});

2 wolfs

2 tigers

2 lions

2 sheep

we need to house them in four cages (two animals in each cage) by these rules:

A.in one cage we need to house a wolf and a sheep.

B.we cant house two animals of the same kind in one cage.

which one of these arguments in necessarily true:

1.at least in one cage a lion and a tiger will be housed.

2.at exactly one cage a lion and a sheep will be housed.

3.at exactly one cage a tiger and a sheep will be housed.

4.there is another cage in which a sheep and a wolf will be housed.

what is the simplest way to solve this question??

i found one combination for each argument

and tried to find common stuff between them.

regarding answer 1:

|wolf ,sheep |lion,tiger|sheep,lion|wolf,tiger|

regarding answer 2:

|wolf,sheep |sheep,lion|wolf ,tiger|lion,tiger|

regarding answer 3:

|wolf,sheep |sheep,tiger|wolf ,lion|lion,tiger|

regarding answer 4:

if we put a fifth cage it leaves us with 4 animals

we cant put two animals in each one of the four left cages

if we left with only fours animals,so its not possible.

i found that a lion and a tiger in one cage is the common thing among these three combinations.

but i cant think of three combination in order to solve this kind of question

it takes too much time.

is there any easier way??

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# A logical question

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