What is the longest word in the dictionary?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

Find the next number in the sequence

5 12 24 36 ?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

There was a blind beggar living on the footpath of a street. Suddenly one day, the beggar's brother died. What was the relation of the blind beggar with the person who died?

PS: Brother is not the answer.

You need to move three matchsticks to form three squares. Can you do it?

What can jump higher than a building?