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?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Which wheel of car does not rotate when you turn your car right?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?