How could a baby fall out of a twenty-story building onto the ground and live?

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!!!

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What makes this number unique: 8,549,176,320?

The more you take me, the more you leave me behind.
Who Am I?

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

People put me on the table and cut me but do not eat me. What am I?

I cannot talk, but I always reply when spoken to. What am I?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?