Find the next number in the sequence

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

what does this below rebus represent identXQQQQQME

What does the below rebus puzzle mean?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

What has many keys but can’t open a single lock?

What kind of tree can you carry in your hand?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?