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?

What's the only room from which no one can enter or leave

Using Only Five 5's and any mathematical operator make sum as 37

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

what does the below rebus means?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

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