Question

If there was a person with a contagious disease, and made four interactions, and those people each made four interactions including the contagious person, how many people would be infected?

Answer 1

9 people are infected. hope this helps.

Answer 2

I got the answer 21 because one was infected, then that one infected four others, then those four infected four others which would mean 21 people are now infected. 1+4+16= 21 4*4=16