There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

Which letter of the alphabet has the most water?

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?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

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

When did John make this statement?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700

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?

What does an Island and the letter T have in common?