Current location - Quotes Website - Collection of slogans - Guangming Middle School organized four people to convey the slogan of "Healthy Life, Civilized Fashion" to the whole school, and asked one person on average to inform other people who didn't know 14.
Guangming Middle School organized four people to convey the slogan of "Healthy Life, Civilized Fashion" to the whole school, and asked one person on average to inform other people who didn't know 14.
∵ Through four-person communication, one person informs other unknown people in each round of communication 14.
∴ In the first round, there were 4+4× 14=60 people, and in the second round, there were 60× 14=840 people.
After two rounds of communication, the number of people who know the advertising language is 840+60=900.