What has many keys but can’t open a single lock?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

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

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

What occurs twice in a week, once in a year but never in a day?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?