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

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Can you decipher the two rows to find the hidden word?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

How can you tell a raw egg from a hard-boiled egg?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.