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

John was drowned by he was not wet. How?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

There is a basket full of hats. Three are white and two are black. Three men, Tom, Tim, and Jim, each take a hat out of the basket and put it on their heads without seeing the hat they selected or the hats the other men selected. The men arrange themselves so Tom can see Tim and Jim’s hats, Tim can see Jim’s hat, and Jim can’t see anyone’s hat. Tom is asked what color his hat is and he says he doesn’t know. Tim is asked the same question, and he also doesn’t know. Finally, Jim is asked the question, and he does know. What colour is his hat?

What begins with T, ends with T, and has T in it?

What number should come in place of the question mark below?

How many Watermelons are there in the below picture?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

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

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?