Can you convert the number zero(0) into a positive number using just one mathematical operator ?

In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. 123 people participate in the contest. When the boxes are opened, it turns out that 43 people have guessed none of the fruits correctly, 39 people have guessed one fruit correctly, and 31 people have guessed two fruits correctly.
How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly

Our product and our sum always give the same answer. Who are we?

James ordered a fishing rod, priced at $3.56. Unfortunately, James is an Eskimo who lives in a very remote part of Greenland and the import rules forbid any package longer than 4 feet to be imported. The fishing rod was 4 feet and 1 inch, just a little too long, so how can the fishing rod be mailed to James without breaking the rules? Ideally James would like the fishing rod to arrive in one piece!

What is the word or phrase below?
R | E | A | D

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

I have eight fingers and two thumbs but I do not live. What Am I?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Which English verb becomes past tense just by rearranging the letters?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?