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?

I’m tall when I’m young, and I’m short when I’m old. What am I?

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

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

There is something which you can be arrested for attempting but not for successfully completing.

Which letter of the alphabet has the most water?

How many triangles can you find in this given picture?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.