Grades 9-10 Video Solutions 2023-2023_9-10

Video Transcription

Video Summary

Tim minimizes the mean of five different prime numbers by selecting the smallest primes possible. Initially, the smallest primes are 2, 3, 5, 7, and 11, but their sum, 28, isn’t divisible by 5. By replacing the largest prime, 11, with the next largest prime, 13, the sum becomes 30. This sum, 30, is divisible by 5, resulting in a mean of 6. Thus, the smallest possible integer mean using five different prime numbers is 6.

Keywords

prime numbers

mean

smallest primes

integer mean

sum divisible