What is the next number in this series?

4,12,84,3612....

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

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

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

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?