What seven-letter word has hundreds of letters in it?

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

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

Next Number in the Series,

5, 16, 49, 104, ?

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

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

There was a strange boy who was born before his father. How can this be possible?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!