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Class 9 Mathematics: Number Systems
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MCQs on number system basics, irrational numbers, representing real numbers on number line, real numbers and its decimal expansions, real number operations and exponents laws.

Class 9 Mathematics: Number Systems
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25 Questions

1. If we add or subtract an irrational number and a rational number (non-zero), then we get a/an __________ number.
2. By simplifying (5)3/4/(5)1/4, we get __________
3. Rational numbers are denoted by ______
4. Which of the following is not rational number?
5. Find the incorrect option (Assume conventional notations).
6. By simplifying \((\sqrt{3}+\sqrt{2}) * (\sqrt{3}+\sqrt{2})\), we get __________
7. Zero is a rational number.
8. Which of the following is Natural number?
9. Integer numbers set is denoted by which letter?
10. 3 + \(\sqrt{2}\) is a/an __________ number.
11. How many whole numbers are there between -3 and 3 (Including -3 and 3)?
12. 0.238765563246… is a/an __________
13. 0.3454545…..=_____________
14. Which of the following number is an irrational number between 1/3 and 2/3?
15. Which of the following option is correct according to the below statements?
i) Every rational number is real number.
ii) Every real number is rational number.
16. The decimal expansion of rational numbers is either terminating or non-terminating and recurring (repeating).
17. By simplifying \((\sqrt{7}+\sqrt{5}) * (\sqrt{7}-\sqrt{5})\), we get __________
18. By rationalising the denominator of \(\frac{1}{\sqrt{3}}\), we get __________
19. How many real numbers are there between 3 and 8 (Including 3 and 8)?
20. By simplifying (3)1/3 * (3)2/3, we get __________
21. 0.3333… is a/an ______________
22. Irrational numbers are denoted by _______
23. By simplifying (8)2/3, we get __________
24. Which of the following is the correct way to write \(5.4\bar{12}\)?
25. Which of the following is not irrational number?

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