Question

if A ={1,3,9,11,13},B={3,11,13}then write AUB?​

Answer 1

Answer:

AUB={1,3,9,11,13}

Step-by-step explanation:

A={1,3,9,11,13}

B={3,11,13}

In AUB all elements are taken who belongs to set A and B except those whose are repeated are taken only one

AUB={1,3,9,11,13} is the answer.

Answer 2

Hey Smita !

Answer:

A, i.e. {1,3,9,11,13}

Step-by-step explanation:

Given :

A = {1,3,9,11,13}

B = {3,11,13}

Concept :

AUB = {x, such that x ⊂ A or B }

If B ⊂ A, AUB = A

A∩B = {x, such that x ⊂ A and B both}

If B ⊂ A, A∩B = B

Procedure :

As B is a subset of A here,

Hence A U B = {1,3,9,11,13} = A.

Thanks !