Can you name some countries which do not have the alphabet 'A' in them?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What is the end of everything?

Who has married many women but was never married?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

Count the number of triangles in the picture below:

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?