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nlexa [21]
3 years ago
7

Let A = {15, 25, 35, 45, 55, 65} and B = {25, 45, 65}. What is A ∩ B?

Mathematics
1 answer:
NemiM [27]3 years ago
5 0

Answer:

A∩B={25, 45, 65}

B is a proper subset of A:

B⊂A

Step-by-step explanation:

A∩B means the intersection of the set A and the set B. In other words, is the set of elements contained in these both sets.

Given the set A and the set B:

A ={15, 25, 35, 45, 55, 65}

B ={25, 45, 65}

You can indentify that the numbers common in both sets are: 25,45 and 65.

Therefore you get:

A∩B={25, 45, 65}

Since all elements of B are in A, and A contains elements that are not in B, then B is a proper subset of A:

B⊂A

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