Which of the below owl is odd one out?

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

Why is 6 afraid of 7?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

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

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What has 13 hearts but no other organs?

You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different. How do you measure 45 minutes?

Whats the next number in the below number sequence pattern.