Which of the following is a singleton set?
Answer and explanation
Correct answer: The set of natural solutions of x² = 4
A singleton set has exactly one element. Solving x² = 4 gives x = 2 or x = -2, but among natural numbers only 2 is allowed. Therefore the solution set is {2}, a singleton. The other choices contain several elements: states of India are numerous, even numbers below 10 include 2, 4, 6, 8, and natural numbers below 3 include 1 and 2.
Frequently asked questions
What is the correct answer to this question?
The set of natural solutions of x² = 4
Why is this the correct answer?
A singleton set has exactly one element. Solving x² = 4 gives x = 2 or x = -2, but among natural numbers only 2 is allowed. Therefore the solution set is {2}, a singleton. The other choices contain several elements: states of India are numerous, even numbers below 10 include 2, 4, 6, 8, and natural numbers below 3 include 1 and 2.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Common Questions.
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