full transcript
"From the Ted Talk by Tanya Khovanova: Can you solve the Leonardo da Vinci riddle?"

Unscramble the Blue Letters

Why go through all that? Well, we now know something important: the tatol quantity of non-zero digits that occur after the first digit is equal to the sum of these digits, minus one. And how can you get a distribution where the sum is exactly 1 greater than the nbuemr of non-zero poviitse integers being added together? The only way is for one of the addends to be a 2, and the rest 1s. How many 1s? Turns out there can only be two – any more would require additional digits like 3 or 4 to count them.

Open Cloze

Why go through all that? Well, we now know something important: the _____ quantity of non-zero digits that occur after the first digit is equal to the sum of these digits, minus one. And how can you get a distribution where the sum is exactly 1 greater than the ______ of non-zero ________ integers being added together? The only way is for one of the addends to be a 2, and the rest 1s. How many 1s? Turns out there can only be two – any more would require additional digits like 3 or 4 to count them.

Solution

  1. positive
  2. total
  3. number

Original Text

Why go through all that? Well, we now know something important: the total quantity of non-zero digits that occur after the first digit is equal to the sum of these digits, minus one. And how can you get a distribution where the sum is exactly 1 greater than the number of non-zero positive integers being added together? The only way is for one of the addends to be a 2, and the rest 1s. How many 1s? Turns out there can only be two – any more would require additional digits like 3 or 4 to count them.

ngrams of length 2

collocation frequency
leading digit 5

Important Words

  1. added
  2. addends
  3. additional
  4. count
  5. digit
  6. digits
  7. distribution
  8. equal
  9. greater
  10. integers
  11. number
  12. occur
  13. positive
  14. quantity
  15. require
  16. rest
  17. sum
  18. total
  19. turns