Q. 14.1( 73 Votes )

Find the union of

Answer :


Venn diagram shown above represents that the union of any two sets will give all the members of the two sets together, and not replicating the common member twice.

(i) It is given in the question that,


X = {1, 3, 5}


And, Y = {1, 2, 3}

All the members of both sets together are 1, 3, 5, 1, 2, 3.

Now we don't have to replicate members. So, the members of union of these two sets are 1, 2, 3, 5


(ii) It is given in the question that,


A = {a, e, i, o, u}


And, B = {a, b, c}

All the members of both sets together are a, e, i, o, u, a, b, c

Now we don't have to replicate members. So, the members of union of these two sets are a, b, c, e, i, o, u



(iii) It is given in the question that,


A = {3, 6, 9, 12, 15, 18,……}


And, B = {1, 2, 3, 4, 5}

All the members of both sets together are 3, 6, 9, 12, 15, 18, ..........., 1, 2, 3, 4, 5

Now we don't have to replicate members. So, the members of union of these two sets are 1, 2, 3, 4, 5, 6, 9, 12, 15, 18, ..........


(iv) It is given in the question that,


A = {2, 3, 4, 5, 6}


And, B = {7, 8, 9}

All the members of both sets together are 2, 3, 4, 5, 6, 7, 8, 9.

Now we don't have to replicate members. So, the members of union of these two sets are 2, 3, 4, 5, 6, 7, 8, 9


(v) It is given in the question that,


A = {1, 2, 3}


And,

All the members of both sets together are 1, 2, 3

Now we don't have to replicate members. So, the members of union of these two sets are 1, 2, 3

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