It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

What part of the chicken has the most feathers?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

What number divided by 4 is the same as that number minus 4?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Do You See It?

If eleven plus two equals one, what does nine plus five equal?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

I am an odd number. Take away a letter and I become even. What number am I?