Express the set shown below in roster form. ​{x | x is a natural number less than -2}

Given:

The set is:

To find:

The raster form of the given set.

Solution:

We know that, natural numbers are all positive integers.

Natural numbers: 1, 2, 3, 4,... .

The given set is:

Here, x is a natural number and it is less than -2, which is not possible.

Since all natural numbers are greater than or equal to 1, therefore the given set has no element.

Therefore, the roaster form of the given set is or .

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answer: d.) the total number of protons and neutrons is 15

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