Questions: Which sets does 4.333... belong to? rational and real numbers irrational and whole numbers rational and natural numbers integers and irrational numbers
Transcript text: Which sets does $4.333 \ldots$ belong to?
rational and real numbers
irrational and whole numbers
rational and natural numbers
integers and irrational numbers
Solution
Solution Steps
To determine which sets the number \(4.333\ldots\) (which is a repeating decimal) belongs to, we need to classify it based on the properties of different number sets:
Rational Numbers: Numbers that can be expressed as a fraction of two integers. Repeating decimals are considered rational.
Real Numbers: All numbers that can be found on the number line, including both rational and irrational numbers.
Given that \(4.333\ldots\) is a repeating decimal, it is a rational number. Since all rational numbers are also real numbers, \(4.333\ldots\) belongs to both the rational and real number sets.
Step 1: Identify the Number Type
The number \(4.333\ldots\) is a repeating decimal, which can be expressed as the fraction \(\frac{13}{3}\). Since it can be represented as a fraction of two integers, it is classified as a rational number.
Step 2: Classify the Number
All rational numbers are also real numbers. Therefore, \(4.333\ldots\) belongs to both the set of rational numbers and the set of real numbers.
Step 3: List the Sets
Based on the classifications, we conclude that \(4.333\ldots\) belongs to the following sets:
Rational Numbers: \( \mathbb{Q} \)
Real Numbers: \( \mathbb{R} \)
Final Answer
The number \(4.333\ldots\) belongs to the sets of rational and real numbers. Thus, the answer is: