I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

What does Alexander the Great and Winnie the Pooh have in common?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Where do fish keep their money?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Find the value of "?" in the ball picture Riddle below: