Before Mount Everest was discovered, what was the highest mountain in the world?

What is the riddle which can be asked all day with a different correct answer each time.

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

How many letters are in the alphabet?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.