You need to move three matchsticks to form three squares. Can you do it?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Buy me, smell me or deliver me, I do not change.

Who am I?

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?

What type of tree can I carry in my hand?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

Where do you go to learn how to make ice cream?

No matter how little or how much you use me, you change me every month. What am I?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?