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List all the elements of B that belong to the given set.Rational numbers

List all the elements of B that belong to the given set.Rational numbers-example-1
User Will Green
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1 Answer

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SOLUTION

Given the question in the question tab, the following are solution steps to get the elements of B that belong to the given set.

Step 1: Define rational numbers

A rational number is a number that can be expressed in the form of p/q, where p and q are integers and q is not equal to 0. Non-terminating decimals that do not have repeated numbers after the decimal point are not rational numbers.

Step 2: Write out the given sets


\begin{gathered} B=\mleft\lbrace20,\sqrt[]{8,}-6,0,(0)/(9),0.3\mright\rbrace \\ Rational\text{ numbers=}*\mleft\lbrace(p)/(q)\mright|p,q\text{ are real numbers},and\text{ q}\\e0\} \end{gathered}

Step 3: Write out the rational numbers from set B


\begin{gathered} 20\text{ }\epsilon Rational\text{ numbers (because it can be written in the }(p)/(q)\text{ as in }(20)/(1)) \\ \sqrt[]{8}\text{ is not a rational number because the solution gives a non-terminating decimal with non repeating digits} \\ -6\text{ }\epsilon Rational\text{ numbers (because it can be written in the }(p)/(q)\text{ as in }(-6)/(1)) \\ 0\text{ }\epsilon Rational\text{ numbers (because it can be written in the }(p)/(q)\text{ as in }(0)/(1)) \\ (0)/(9)\text{ }\epsilon Rational\text{ numbers (because it can be written in the }(p)/(q)\text{ }) \\ 0.3\text{ }\epsilon Rational\text{ numbers (because it can be written in the }(p)/(q)\text{ as in }(3)/(10)) \end{gathered}

Hence, it can be seen from the explanations in Step 3 that the following are rational numbers:

Option B:


\lbrace20,-6,0,(0)/(9),0.3\rbrace

User Saleel
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