You need to arrange three 7 and mathematical symbols to form number 1?

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

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

What does an Island and the letter T have in common?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

What is both possible and impossible at the same time?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?