It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

You bought me for dinner but never eat me. What am I?

Why Wine Glass Stem is so long?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

Can you find the dog hidden in a group of pandas?

I taste better than I can smell. Who am I?