Why did Navjot Singh Sidhu put the new January calendar in the freezer

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?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

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?

What is the next number in this matchsticks series riddle?

What is the end of everything?