I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Can you find out the remainder when 3^300 is divided by 5?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

Can it be possible to build a house that has all its four walls facing towards the South?

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

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

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.