Question

if A={2,5,7,8,9},B={7,8,10,11}, find A triangle B​

Answer 1

Answer:

Answer 9,13,18,21 this is the answer of your question.

Answer 2

Concept:

n(C∪T)=N(C)+N(T)-N(C∩T)

C∩T means C intersection T which means area common between C and T

C∪T means C union t which means area covered by both C and T

A△B means the items which are either in A or in B but not in both A and B

A△B=(A−B)∪(B−A)

Given:

A={2,5,7,8,9} and B={7,8,10,11}.

FIND:

A△B=?

Solution:

So

A−B={2,5,9} and B−A={10,11}. Hence

A△B=(A−B)∪(B−A)={2,5,9,10,11}

Therefore, A△B={2,5,9,10,11}

#SPJ3