What you cannot hold but it is yours?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

When is the top of a mountain similar to a savings account?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Which of the below owl is odd one out?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??