Subcategories

• Day 1

  Ordered Arrangements

  Module 3 Day 1 Challenge Part 1

  Module 3 Day 1 Challenge Part 2

  Module 3 Day 1 Challenge Part 3

  Module 3 Day 1 Challenge Part 4

  Module 3 Day 1 Challenge Part 5

  Module 3 Day 1 Your Turn Part 1

  Module 3 Day 1 Your Turn Part 2
  8
  Topics
  44
  Posts

  P

  In the video, the question has five options, but the answer selector only lets us choose from 4 of them.

• Day 2

  Venn Diagram

  Module 3 Day 2 Challenge Part 1

  Module 3 Day 2 Challenge Part 2

  Module 3 Day 2 Challenge Part 3

  Module 3 Day 2 Challenge Part 4

  Module 3 Day 2 Your Turn Part 1

  Module 3 Day 2 Your Turn Part 2
  4
  Topics
  8
  Posts

  

  @aaronhma Ooh, good catch! Yes, it should probably be for 5-digit numbers. I've passed this on, thanks!

• Day 3

  Overlapping Worlds

  Module 3 Day 3 Challenge Part 1

  Module 3 Day 3 Challenge Part 2

  Module 3 Day 3 Challenge Part 3

  Module 3 Day 3 Challenge Part 4

  Module 3 Day 3 Your Turn Part 1

  Module 3 Day 3 Your Turn Part 2
  8
  Topics
  22
  Posts

  

  @professionalbronco Yes, that definitely works! It's interesting how both strategies are useful in different cases- Prof. Loh's method is faster when considering larger numbers, but yours is quicker in this case with smaller numbers 🙂 Nice!

• Day 4

  Careful Casework

  Module 3 Day 4 Challenge Part 1

  Module 3 Day 4 Challenge Part 2

  Module 3 Day 4 Challenge Part 3

  Module 3 Day 4 Your Turn Part 1

  Module 3 Day 4 Your Turn Part 2

  Module 3 Day 4 Your Turn Part 3

  Module 3 Day 4 Your Turn Part 4

  Module 3 Day 4 Your Turn Part 5
  12
  Topics
  38
  Posts

  P

  If we are trying to subtract the number of lines which aren't triangles for a question with a square of bigger dimensions (say a \(20 \times 20 \) square), wouldn't it be more tedious to count the number of lines rather than a \(3 \times 3 \) square? Is there a shortcut to count these "bad" 3 dot combinations?