It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

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

By using 'because' continuously three times, can you make an English statement ?

What four weights can be used to balance from 1 to 30 pounds?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

I travel all around the world but always stay in the corner. What am I?

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?