Count the number of lines in the image below ?

Using eight eights and addition only, can you make 1000?

You see me once in June, twice in November, and not at all in May. What am I?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

Why Aeroplane windows are round?