Question

SOMEONE PLEASE HELP!!!! I AM ON A TIME LIMIT

Answer 1

Answer:

n(B') = 15

Step-by-step explanation:

Assumunin U is the universal set.

B = { 7,11,17,19}

B' = natural numbers different form 7,11,17 and 19 = {1,2,3,4,5,6,8,9,10,12,13,14,15,16,18}