How can you write nineteen in a manner that if we take out one, it becomes twenty?

How many triangles are there on the puzzle below?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

A man was just doing his job when his suit was torn. Why did he die three minutes later?

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

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?