Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

What building has the most stories?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

Can you place three balls such that the equation shown in the picture holds true?

Can you find a five letter word that is left with only two letters if one is removed?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

What does this rebus puzzle means ?