Which is heavier: a ton of bricks or a ton of feathers?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Using Only Five 5's and any mathematical operator make sum as 37

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day