Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

12345 a famous South Indian actor
567 is a path in jumbled form
8 & 10 are same letters
9 is one among the first six alphabets.
WHO AM I?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

Find the last number in the series below:

voN luJ yaM raM ---

Move four matchsticks to the below square to form three squares?

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

How many triangles are there on the puzzle below?

What does Alexander the Great and Winnie the Pooh have in common?