Question

if X={1,2,3,4,5} and Y={3,4,7,8} thenXUY =?​

Answer 1

Step-by-step explanation:

X U Y ={1,2,3,4,5,7,8}

Answer 2

Given A={2,3,4,5,6,7},B={2,4,7,8},C={2,4}

Let us find which of the following statements are true.

(a) Consider B⊂A

Since 8∈

/

A,B⊈A

Therefore the statement "B⊂A" is not true.

(b) Consider C⊂A

Since 2,4∈A,C⊂A

Therefore the statement "C⊂A" is true.

(c) Consider B⊆C

Since 7,8∈

/

C,B⊈C

Therefore the statement "B⊆C" is not true.

(d) Consider C⊂B

Since 2,4∈B,C⊂B

Therefore the statement "C⊂B" is true.

Thus both (b) and (d) are true.