Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

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

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Move four matchsticks to the below square to form three squares?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98