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

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What Adam and Eve do not have but the rest of the people have?

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

What Deficiency does the below rebus represent?

VIT_MIN

Count the number of triangles in the picture below: