I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

There are three identical triplets sisters. Demi is the oldest of them all and she always speaks the truth. Diana is the next one who is a liar always. Drew, the youngest of them all speaks both truth and lies randomly.

On a rainy day, a family friend Victor visited them. Since there were starkly identical, he was not able to recognize them. Thus to clarify, he asked one question to each one of them.

He started with the one standing on the left and asked, 'Which sister is in the middle of you three?' She answered, 'That's Demi.'

Then, he asked the one standing in the middle, 'What is your name?' She answered, 'I am Drew.'

Finally, he asked the one standing on the right, 'Who is standing in the middle?' She answered, 'She is Diana.'

Victor was left baffled. He asked the questions three times and received different answers every time.

Can you tell who was who?

What's the only room from which no one can enter or leave

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

Take one out and scratch my head, I am now black but once was red. What am I?

our enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has room for 6 bullets). He puts 2 bullets into the gun in consecutive slots, and leaves the next four slots blank. He spins the barrel and hands you the gun. You point the gun at yourself and pull the trigger. It doesn't go off. Your enemy tells you that you need to pull the trigger one more time, and that you can choose to either spin the barrel at random, or not, before pulling the trigger again. Spinning the barrel will position the barrel in a random position.

Assuming you'd like to live, should you spin the barrel or not before pulling the trigger again?

I shave every day, but my beard stays the same. What am I?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag