Question

if A is a subset of B then find AunionB and A intersection B

Answer 1

Hi ,

If A is subset of B

1 ) A union B = B

2 ) A intersection B = A

Example :

If A = { 1 , 3 },

B = { 1, 2 , 3 , 4 }

A is subset of B

A U B = { 1 , 3 } U { 1, 2 , 3 , 4 }

= { 1, 2 , 3 , 4 }

= B

A intersection B

= { 1, 3 } intersection { 1,2 ,3 , 4 }

= { 1 , 3 }

= A

I hope this helps you.

:)