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

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 ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you identify the famous TV character from the rebus below?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

Prove that twice of ten is the same as twice of eleven.

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?