When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

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?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Our product and our sum always give the same answer. Who are we?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

In a kingdom, King George did not allow any citizen to visit the world outside. Also, only a person with proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check the every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter. How?

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What goes up but never comes down?