When can we add 2 to 11 and get 1 as the correct answer?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What Deficiency does the below rebus represent?

VIT_MIN

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Which alphabet letter is a question?

How can a man go eight days without sleep?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

What can you catch but never throw?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?