What is 0^0? What is 0 factorial? Please explain why.
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 @legendaryboy991 
 The answer of a calculator will display 1 for 0^0, but if you do some digging, the answer is still disputed,
 https://www.maa.org/book/export/html/116806
 Linked below is an awesome read more about the topic, the basic rundown is, if you're looking at it algebraically,
 0^0=1
 But if you're doing stuff with limits,
 0^0 is an indeterminate form
  
 also, I'm not sure what calculator you're using, but the google calculator and my Casio 115 (As well as my Casio 991) give me 0!=1, and 1! isn't nessicarily 1x1, it's just 1, i believe.
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 Im using the same and I clicked on that link before 
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 its just that what do you multiply in 0! ? 
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 like 7! is 7x6x5x4x3x2x1 (you don't need one) is 5040. 
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 @legendaryboy991 
 The thing is, you don't multiply anything in 0!, which is indeed, pretty confusing.
 You basically look at it from a logical angle instead;
 How many ways are there to arrange 'nothing'?
 1.
 By having nothing.
 So, taking your example, 7! you now have a number of ways to rearrange 7 things,
 and 0! would be 1 because there's one way to arrange it.
 0! is also what's known as an empty product (Here's a wiki article on empty products:
 https://en.wikipedia.org/wiki/Empty_product)
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 The thing is how to arrange 0 things????? Suppose you have nothing an you want to arrange it. That makes no sense! 
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 @legendaryboy991 it actually sorta does if u think about it- 
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 Hey im only going to 4th grade 
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 @legendaryboy991 Think of it this way: How many ways to arrange 0 thins? 1: Do nothing. you can't do anything else  It seems that you have started your math journey pretty early!  
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