People make me, save me, change me, raise me. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

How many letters are in the alphabet?

How could a baby fall out of a twenty-story building onto the ground and live?

If all the below statements are true

1. Gianni was either in Italy or France in 1997.
2. If Gianni did not kill Versace, Hilton must have killed him.
3. If Versace died of suffocation, then either Gianni killed him or Versace committed suicide.
4. If Gianni was in Italy in 1997, then Gianni did not kill Versace.
5. Versace died of suffocation, but he did not kill himself.

Who killed Versace and where was Gianni in 1997?

Buy me, smell me or deliver me, I do not change.

Who am I?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

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.

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?