People make me, save me, change me, raise me. What am I?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

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

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What is next number in the pattern below:

131 517 192 123 ?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

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