What word begins and ends with an E, but has only one letter?

What four weights can be used to balance from 1 to 30 pounds?

What question can you never answer yes to?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

You can hear me, but you can't touch or see me.

What am I?

Imagine you are in a room with no windows or doors. How will you get out?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Find the hidden panda in the image below.

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?