What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

Which fur should we be getting from the Lion?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

Why do people go to bed?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.