Question

6. Given U = {3,6,9,12,15,18,21}, A = {3,6,9}, and B =

{9,12,15,18,21}, what is B’?

A. U

B. {9}

C. { }

D. {3,6}​

Answer 1

Answer:

the option D Is correct

Becoz B' Menas the U-B

here you can minus elemenys of B from U unoin set

ANSWER= (D)

Answer 2

Answer:

D) {3,6}

Step-by-step explanation:

B'= U-B

= {3,6,9,12,15,18,21}-{9,12,15,18,21}

={3 , 6}