I have an eye but still cannot see.

Who am I?

What does it mean?

Can you fill the blank with the correct number?

6 30 870 756030 _____

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

What jumps when it walks and sits when it stands?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven

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