How can you make number one disappear by adding something to it?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

These types of puzzles are known as charades. What you have to do is find two words that are referred to in the first stanza and the second stanza and put them together to form the third word in the third stanza.

Just for example, if my first refers to 'off' and my second refers to 'ice', then my whole will be office.

My first is present - future's past -
A time in which your lot is cast.

My second is my first of space
Defining people's present place.

My whole describes a lack of site -
A place without length, breadth, or height.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?