Find the next number in the sequence

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

What does this rebus puzzle means ?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

John was drowned by he was not wet. How?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Next Number in the Series,

5, 16, 49, 104, ?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?