201k views
1 vote
Which set is closed under the operation multiplication?

A.
{1, 2, 3}

B.
{0, 1}

C.
{0, 1, 2}

D.
{1, 2}

User Troglo
by
8.1k points

1 Answer

1 vote
I have another set of choices here:

A. {0.5, 1, 2}


B. {1, 2, 4}


C. {1, 2, 3, 4, 5}


D. {0}

If you multiply two numbers from a closed set the answer is in the set.
So A is not closed because 2 x 2 = 4 which isn't in the set. Only 0.5, 1, and 2 are in set A.

Try multiplying the largest numbers in sets B, C, and D by themselves. You will soon discover the closed set.
User Monksp
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.