Question

Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y}
B = {q, s, y, z}
C = {v, w, x, y, z}.

Determine the following.

A ∩ B'

A. {q, s, t, u, v, w, x, y}

B. {r, s, t, u, v, w, x, z}

C. {u, w}

D. {t, v, x}

Answer 1

B' means elements that are not in B but in the universal set

So B' = {r, t , u , v , w , x}

Now \[A ∩ B' \] are the elements that are common to A and B'.

Answer 2

which is {u, w}