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

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

A guy in his thirties is found dead in a forest. The shocking thing about the body is that he is wearing his swimming trunks snorkel and a facemask.

For your information, the nearest lake is some 10 miles away and the sea is hundreds of miles away.

How did he die then?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

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

Two friends Smith and Andrew were talking about the bravery of their families. Smith told great stories about his courageous grandfather who fought for Britain in "World War I". Andrew told that his grandfather was so brave that in 1919 just after the war he was honoured with a bravery medal with the words "For our Courageous Soldiers In World War I" embedded into it. Smith knows that his friend is lying. How?

How can you take 2 from 5 and leave 4?