Question

please answer this. whoever answers will be marked brainliest.​

Answer 1

Answer:

n(A intersct B)=14

Step-by-step explanation:

Formula:n(A intersect B)=n(A)+n(B)-n(A union B)

n(A intersect B)=20+28-36

n(A intersct B)=12

Answer 2

Step-by-step explanation:

GIVEN:-

n(A)=20,n(B)=28 and n(AUB)=36

To find:-

n(A n B)=?

Solution:-

properties/ formula

n(AUB)=n(A)+n(B)-n(AnB)

now,put the value we have find ,n(AnB)

36=20+28-n(AnB)

36=48-n(AnB)

n(AnB)=48-36

n(AnB)=12

Answer:-n(AnB)=12