Question

explained step by step​

Answer 1

Answer:

n(U)=700

Step-by-step explanation:

Given,

n(A)=200

n(B)=300

n(A¿B)= 100 [¿ - intersection]

n(A'¿B')=300 [see fig. 1 in the attachment]

n(U)= 100+100+200+300=700 [see fig. 2]