What number do you get when you multiply all of the numbers on a telephone's number pad?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Take away the whole and some still remain. What is it?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?