Find the next number in the sequence

1, 2, 6, 21, 88, __?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.

Which letter of the alphabet has the most water?

What English word has three consecutive double letters?

I travel all around the world but always stay in the corner. What am I?

By adding four matchsticks, can you divide the square shown in the picture into two equal parts?

Outside a tattoo artist's shop, there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself?

What is the Surname of Barbie Doll?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?