why number 8549176320 is one of a kind?

Count the squares in the matchstick puzzle below?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

Steffi's daughter Jazelle needs to be picked up from school every day.
Steffi asks one of her colleagues to pick up Jazelle from the school. Steffi devised a password system to confirm that Jazelle goes with the correct colleague only.

The password on Monday was SJM16.
The password on Wednesday was TAW39.

What will the password be for Friday?

If your uncle’s sister is not your aunt, what relation is she to you?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?