Question

If n(A∪B∪C)= 100,n(A)= 4x,n(B)= 6x,n(C)= 5x,n(A∩B)= 20,n(B∩C)= 15and

n(A∩C)= 25,then n(A∩B∩C)= 10,then the value of x is

A)10 B)15 C)25 D)30​

Answer 1

Step-by-step explanation:

100=4x+6x+5x-20-15-25+10

100=15x-60+10

100=15x-50

x,=15 OK friend

Answer 2

Answer:

X=15

Step-by-step explanation:

acc. to formula

100=4x+6x+5x-20-15-25+10

100=15x-35-25+10

100=15x-60+10

100=15x-50

100+50=15x

150/15=x

x=15