When 99 is considered higher than 100?

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?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

A father's child, a mother's child, yet no one's son.

Who am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Find the last number in the series below:

voN luJ yaM raM ---

What kind of band never plays music?