Question

Suppose in a survey of 100 sports teams (N(S) = 100), 64 of them have red as one of their team colors (N(A) = 64), and 42 of them have blue as one of their team colors (N(B) = 42). 13 teams have both red and blue as team colors. a. What is N(A - B)? And what does it represent in context? b. What is N(AUB)? And what does it represent in context? C. What is N((AUB))? And what does it represent in context?

Answer 1

A = Red B² Blue 51 13 29 L. Both red and Blue. (Red n Blice) Tofal Red 64 to fcel Blue = 42 Total teams = 100 A a) NCA-B) A-B 51-13 3 8 teams only red color. B. b) N CAUB), A 51+13+ 2q = 93 teams have atleast 1. colon, c) NICA UB) C) total E 100 NAUL) 93 INCA UB) = 100 -N(AUR) 7 9 te am dont have any color.