Logic Puzzles Questions

What falls but never breaks? What breaks but never falls?

This is an ancient invention that allows people to see through the walls. What is it?

When you need me, you throw me away. But when you're done with me, you bring me back. What am I ?

Where do you go in through one hole and come out through two holes at the same time?

I go on four legs in the morning, on two legs at noon, and on three legs in the evening. What am I?

There was a green house. Inside the green house there was a white house. Inside the white house there was a red house. Inside the red house there were lots of babies. What is it?

Before mount everest was discovered, what was the highest mountain on Earth?

This five letter word becomes shorter when you add two letters to it. What is the word?