Grades 5-6 Video Solutions 2021-video 2021 5-6/29

Video Transcription

Video Summary

In a group of 10, elves and trolls each received a token numbered from 1 to 10. They all stated a number from 1 to 10, totaling 36. Elves told the truth, while trolls lied. With an original sum of 55, at least some must be trolls. Considering three trolls taking numbers 8, 9, and 10, their false responses could sum to 8 for the total sum of 36. Thus, the smallest number of trolls is three, as they can adjust their answers such that the total adds up correctly with enough flexibility in their lies.

Keywords

elves

trolls

truth

lies

tokens