What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

I have an eye but still cannot see.

Who am I?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

Can you decipher the below rebus?

PBLUESAISNUERSES

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

Can you spot the man between the coffee bean in the picture below ?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

A bomb exploded in a room full of married couples and no one died. How?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?