A Door Of Fate Or Logics?

A prisoner is faced with a decision where he must open one of two doors. Behind each door is either a lady or a tiger. They may be both tigers, both ladies or one of each.

If the prisoner opens a door to find a lady he will marry her and if he opens a door to find a tiger he will be eaten alive. Of course, the prisoner would prefer to be married than eaten alive :).

Each of the doors has a statement written on it. The statement on door one says, “In this room there is a lady, and in the other room there is a tiger.”

The statement on door two says, “In one of these rooms there is a lady, and in one of these rooms there is a tiger.”
 
The prisoner is informed that one of the statements is true and one is false.

Which door should the Prisoner open?

This should be his choice!

Logical Choice Of Door

What were the choices?

For a moment, let's assume that first statement is true. The lady is behind the Door 1 and tiger is behind the Door 2. But this makes statement 2 also true where it says there is tiger behind one of these door & lady behind one of these doors. Hence, the statement 1 can't be true.

Hence, statement 2 must be true.

Only possibilities left are -

Door 1 - Tiger
Door 2 - Tiger

Door 1 - Lady
Door 2 - Lady

Door 1 - Tiger
Door 2 - Lady.

Since, the true second statement is suggesting there is lady behind 1 & tiger behind the other door, the possibilities of both tigers or ladies are eliminated.

That's why behind Door 1 is tiger & behind Door 2 is lady.

 

Loss Due To Fake Currency Note?

A lady buys goods worth Rs. 200 from a shop. (shopkeeper is selling the goods with zero profit). The lady gives him Rs. 1000 note. The shopkeeper gets the change from the next shop and keeps Rs. 200 for himself and returns Rs. 800 to the lady. Later the shopkeeper of the next shop comes with the Rs. 1000 note saying "duplicate" and takes his money back.
 
How much LOSS did the shopkeeper face?

Find that LOSS here!

Source 

'Cashless' Transaction

What was the tricky? 

The shopkeeper's getting change for Rs.1000 from the next shop is just to confuse you.
He brought Rs.1000 from that shop & gave back Rs.1000. There is no loss or profit from that end. Now he gave genuine Rs.800 & product of Rs.200 to the lady. In return, he got Rs.0 as the Rs.1000 note offered by the lady was fake one. So total loss the shopkeeper faced is of Rs.1000. 

 

What is The Password Trick?

A young man was standing outside a bar thinking to enter into bar. But there was a one problem. There was a guard standing in door asking password. Only those producing correct password allowed to enter. The young man stood there & started observing carefully. A man came to enter into bar. The guard said - twelve, the man answered six. Man allowed to enter. A lady came, guard said - six; she replied - three.The guard allowed her to enter.


Now thinking that he has cracked the trick of password generation the young man went to the guard. The guard said - ten, immediately the young man replied - five. But the guard denied his entry to the bar. Can you tell the reason? 

What's the password?

This was the trick! 

To Generate The Correct Password

Read here what happened? 

The trick for the password was different from that the young man was thinking. 

The password was the number of letters in the spelling of number that guard was saying.

TWELVE - SIX

SIX -THREE

Hence for TEN the password should have been THREE not half of TEN! 

This was the code language designed for the entry into the bar.