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

No matter how little or how much you use me, you change me every month. What am I?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

I drive at an average speed of 30 miles per hour to the railroad station each morning and catch my train. On a particular morning, there was a lot of traffic and at the halfway point, I had averaged only 15 miles per hour. How fast must I drive for the rest of the way to catch my train?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

A tourist visits a small town for his research. While in the town, he decides to get a haircut. Since the town is quite small, there are only two barbers in the town � one on the North Street and one on the South Street. The barbershop on the North Street is a mess and the barber has a weird and pathetic haircut. While the barbershop at the South Street is pretty tidy and the barber as well has an impressive haircut.

Which barbershop will the tourist visit for his haircut and why?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

Rearrange the letters in "new door" to make one word.

What is next number in the pattern below:

131 517 192 123 ?