Which of the following is not a whole number but is a real number?
Answer and explanation
Correct answer: -3
-3 is a real number but not a whole number because whole numbers are 0, 1, 2, ... (non‑negative integers). Options B (0) and C (1) are whole numbers. Option D (2/0) is undefined (division by zero) and therefore not a real number. Exam tip: first check if an expression is defined; then check whether it belongs to the whole-number set (non‑negative integers).
Frequently asked questions
What is the correct answer to this question?
-3
Why is this the correct answer?
-3 is a real number but not a whole number because whole numbers are 0, 1, 2, ... (non‑negative integers). Options B (0) and C (1) are whole numbers. Option D (2/0) is undefined (division by zero) and therefore not a real number. Exam tip: first check if an expression is defined; then check whether it belongs to the whole-number set (non‑negative integers).
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Irrational numbers and real numbers.
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