Question

if n(x)=8, n(x n y)=5 and n(x u y)=18 find n(y)​

Answer 1

n(y)=15

Step-by-step explanation:

n(xuy)= n(x)+n(y)-n(xny)

n(y)=n(xuy)+n(xny)-n(x)

n(y)=18+5-8

n(y)=15

Answer 2

Answer:

n(y)=15

Step-by-step explanation:

from the relation

n(x u y)=n(x)+n(y)-n(x n y)

we get,

18=8+n(y)-5

n(y)=18-3

n(y)=15.