A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Rearrange the letters in "new door" to make one word.

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What 5-letter word typed in all capital letters can be read the same upside down?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

To tease, King Akbar told his most clever advisor Birbal to give his daughter one thing that she can eat when hungry, drink if she feels thirsty and can burn if she feels cold. King Akbar was shocked when Birbal gave Akbar's daughter one such thing that satisfies all of the above.

What did Birbal give to Akbar's daughter?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

Count the number of squares in the picture below.