A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

The more you take me, the more you leave me behind.
Who Am I?

John was visiting his friend Jacob. He found out that his friend's wife had just killed a burglar in self-defense.
John asks Jacob about what happened and he told that "His wife was watching television when suddenly the bell rang. She thought that it is her husband Jacob but she found the burglar who attacked her instantly and she got so frightened that she killed the burglar immediately with the knife.
John asked the police to arrest his friend's wife. Why?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Find the next number in the series below

21 32 54 87 131 ?

Can you find out who is the kidnapper in below Picture and why, Explain ?