Question

(a)
15. Twenty members have attended a party, 3/5 of them belong to group A, 2/5 or them belong to
group
B and 1/5 of them belong to both the groups. How many members do not belong to
neither of the groups?
(a) 0
(b) 4
(c) 2
(d) 8​

Answer 1

Answer:

0

is your answer pls mark as brainliest

Answer 2

Answer:

n(A)=3/5. =>20 * 3/5 = 12. (20*3/5= 60/5 = 12).

n(B)=2/5. =>20 * 2/5 = 8

n(A insertion B)=1/5. =>20 * 1/5 = 4

n(U)=20

n(A union B ) compliment = n(U)-[n(A)+n(B)-n(A insertion B)

= 20-[12+8-4]

= 20-16

= 4

option b ans 4