What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

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?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

You bought me for dinner but never eat me. What am I?