What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What has many teeth, but cannot bite?

If two fifty-foot ropes are suspended from a forty-foot ceiling that is twenty feet apart, how much rope will you be able to steal if you have a knife?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

Can you identify the hidden rebus in the image below?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Find the smallest sentence with all the English alphabet.