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

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

What Time Should the last watch show in the below figure?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

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

How can you make number one disappear by adding something to it?

What Deficiency does the below rebus represent?

VIT_MIN

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

What Adam and Eve do not have but the rest of the people have?