Question

If X and Y are two sets such that X Y has 60 elements, X has 25 elements and Y has 48 elements. How many elements does X ∩ Y have?

Answer 1

Answer:

10

Step-by-step explanation:

X U Y = 50

\begin{gathered}x = 28 \\ y = 32 \\ \end{gathered}

x=28

y=32

X ∩ Y =?

n(x U y)=n(x)+n(y)- n(X ∩ Y)

50=28+32-n(X ∩ Y)

50-28-32=-n(X ∩ Y)

-10=-n(X ∩ Y)

therefore X ∩ Y= 10

Answer 2

Answer:

i think

its 10

not sure

!!