Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

What demands an answer, but asks no questions

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

Can you place three balls such that the equation shown in the picture holds true?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

Can you write down eight eights so that they add up to one thousand?

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?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G