Choose the correct statement about the set {x ∈ ℚ : x has a terminating decimal expansion}.
Answer and explanation
Correct answer: It is infinite
There are infinitely many rational numbers with terminating decimal expansions. For example, 1/2 = 0.5, 1/4 = 0.25, 3/10 = 0.3, and every positive integer has a terminating decimal representation. More generally, numbers such as 1/10, 1/100, 1/1000, and so on are all distinct members. Therefore, the set is infinite, so option C is correct.
Frequently asked questions
What is the correct answer to this question?
It is infinite
Why is this the correct answer?
There are infinitely many rational numbers with terminating decimal expansions. For example, 1/2 = 0.5, 1/4 = 0.25, 3/10 = 0.3, and every positive integer has a terminating decimal representation. More generally, numbers such as 1/10, 1/100, 1/1000, and so on are all distinct members. Therefore, the set is infinite, so option C is correct.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: Decimal expansion of rational numbers.
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