Question

correct will give you brainly and wrong will give you report​

Answer 1

Answer:

Given:

n(A)=20,  

n(A∪B)=42

n(A∩B)=4

(i)

n(A∪B)=n(A)+n(B)−n(A∩B)

42=20+n(B)−4

n(B)=42−20+4=26

(ii

n(A−B)=n(A)−n(A∩B)

n(A−B)=20−4=16

(iii

n(B−A)=n(B)−n(A∩B)

n(B−A)=26−4=22

Step-by-step explanation:

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