If 21x = 79x, what is the value of x?

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

What is full of holes but still holds water?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Why 1729 is a magic number? Answer Logically.

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

What begins with T, ends with T, and has T in it?

I know a nine-letter word having only one vowel.
Do you ?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?