If you say my name, I will no longer exist. What am I?

Make a sentence consisting of three words that have the whole alphabet.

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

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

Who am I?

What goes up but never comes down?

What does a man do only once in his lifetime, but women do once a year after they are 29?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

A man died and leaves Rs.10,000 in his will. There are 6 beneficiaries- his 3 sons and their wives. The 3 wives receive Rs.3960 of which Priyanka gets Rs.100 more than Tanu and Neha gets Rs.100 more than Priyanka.
Pramod gets twice as much as his wife, Tushar gets the same as his wife, and Prashant gets 50% more than his wife.

Who is married to whom?