Question

Which of the following is BUC? A. {11, 13, 14, 17) B. {12, 14, 16, 18, 20} C. (12, 13, 17, 18, 19} D.{12,13,17,16,17,18,19)​

Answer 1

If we consider,

B={12, 14, 16, 18, 20}

C= (12, 13, 17, 18, 19}

Then  BUC =  {12, 14, 16, 18, 20} U (12, 13, 17, 18, 19}

BUC= {12, 13, 14, 16, 17, 18, 19, 20}

Answer 2

Answer:

Given : All sets are

          A { ${11,13,14,17}$ }

          B {$12,14,16,18,20$}

          C {$12,13,17,18,19$}

          D {$12,13,17,16,17,18,19$}

To find : B∪C

Step by step solution :

The union of two sets contains all the elements contained in either set (or both sets). The union of two sets is denoted by A ⋃ B.

∴ B∪C = {$12,13,14,16,17,18,19,20$}