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?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

Find the next number in the sequence

5 12 24 36 ?

If your uncle’s sister is not your aunt, what relation is she to you?

What is so fragile that saying its name breaks it?

Find the last number in the series below:

voN luJ yaM raM ---

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

What is next number in the pattern below:

131 517 192 123 ?