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GenaCL600 [577]
3 years ago
9

Consider U = {x|x is a positive integer greater than 1}.

Mathematics
2 answers:
iris [78.8K]3 years ago
5 0
2x will be an even number, which means it's immediately divisible by 2. Therefore it cannot be prime, so the second set is empty.
Irina18 [472]3 years ago
4 0
<h3><u>Answer:</u></h3>

Hence, the set that is empty is:

{x|x ∈ U and 2x is prime}

<h3><u>Step-by-step explanation:</u></h3>

We are given:

U = {x|x is a positive integer greater than 1}

i.e. U={2,3,4,5,6,7,.....}

The empty set among the following is:

{x|x ∈ U and 2x is prime}

As x ∈ U.

This means that x has to be an positive integer which is greater than 1.

and 2x will be an even integer i.e. {4,6,8,.....}.

Hence,

the term 2x can't be a prime as each of the number has more than 2 factors other than 1 and number itself.

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