I have feet, but no legs. Which animal Am I?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

Next Number in the Series,

5, 16, 49, 104, ?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

If we tell you that there is a relation between the numbers and letters in the given figure, can you analyze it and find the missing letter in the last box?

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 three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

Spelt forwards I’m what you do every day, spelled backwards I’m something you hate. What am I?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?