cygwtgp464 cygwtgp464

02-10-2021
Mathematics

contestada

no(A) = nob)-D CAO B) =40
n (AUB)= 10
n(U) =?

Respuesta :

goatpro961 goatpro961

02-10-2021

Answer:
n(A)=30
Step-by-step explanation:
n(A)+ n(B) -n(A∩B)=n(AUB)
let n(A) = x
x+20-10=40
x+10=40
x=40-10
x=30
hope this will help u

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