Step 3. Determine what operations to be used. Using the formula n( A UB) = n(A) + n(B) - n A n B). then, n(ANB) = n(A) + n( B) - n( A UB) n(ANB) = 20 + 28 - 36 nANB ) = 48 - 36 n( AN B) = 12 Pls po help

sayang
Step-by-step explanation:
may sagot ako nito eh. Wala nga lang akong picture . galing rin yun sa source naipasa ko na. sayang talaga