Grade -1 "Final Exam" Answers (Part 1)

Описание: This is the 1st video (of about 3) of me explaining the answers to the math section of the Grade -1 Final Exam I released last week. I only went over the first 5 questions in this part since I wanted to show the whole process of logical ways to solve them and to explain further explanations of some concepts like "natural density". I'll release the other answer videos (then a text version of the answers) soon. And if you haven't seen the episode about the exam yet, check it out on the ‪@ComboClass‬ channel here:    • I Hate Tests... So I Created One  
and/or check out the text version here: https://docs.google.com/document/d/1K...

The questions I'm answering in this video are:
[1] If you had a typical 12-hour clock starting at the “12”, and went forward 11 hours 123 times, what number would you end up on?
[2] If you rolled two 20-sided dice and calculated the difference between the two numbers, and repeated this process one million times, which integer would you expect to occur as the difference the most frequently?
[3] If you had 1 of each Platonic Solid shape (each of the possible 3-dimensional convex regular polyhedra), and you added up the number of vertices on each of them, what number would you get?
[4] How many 2-digit numbers are neither threeven nor even?
[5] What is the natural density of numbers that are threeven but not even?

More links:
Patreon:   / comboclass  
Discord:   / discord  
Subreddit:   / comboclass  

Through at least the rest of March, I'll be livestreaming on this @Domotro channel every Monday at 10 AM Pacific Time and each Thursday at 6 PM Pacific Time.

If you have any extra clocks/dice/etc., here's my private mailbox address (not my home address). If you're going to send anything, please watch this short video first:    • Видео  
Domotro
1442 A Walnut Street, Box # 401
Berkeley, CA 94709