I have eight fingers and two thumbs but I do not live. What Am I?

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?

Can you solve the below rebus?

Which is heavier: a ton of bricks or a ton of feathers?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

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