Nubmer System - MCQs


  1. The first natural number is:
    2. a. 0
    b. 1
    c. -1
    d. -2

  2. Which number is a whole number but not a natural number?
    3. a. -2
    b. 0
    c. 1
    d. 3

  3. Integers include:
    4. a. Only natural numbers
    b. Positive, negative numbers and zero
    c. Only negative numbers
    d. Fractions

  4. Which of these is irrational?
    5. a. \(\frac{7}{9}\)
    b. \(\sqrt{3}\)
    c. -4
    d. 0

  5. Which set contains both rational and irrational
    6. a. Integers
    b. Natural numbers
    c. Real numbers
    d. Whole numbers

  6. Which number has no predecessor
    7. a. 1
    b. 0
    c. -1
    d. -2

  7. Decimal 0.1010010001... is:
    8. a. Rational
    b. Terminating decimal
    c. Irrational
    d. Integer

  8. Which of the following is a rational number?
    9. a. \(\pi\)
    b. \(\sqrt{5}\)
    c. \(\frac{22}{7}\)
    d. Integer

  9. The symbol \(\mathbb{(N)}\) denotes:
    10. a. Whole numbers
    b. Rational numbers
    c. Natural numbers
    d. Integer

  10. The symbol \(\mathbb{(Z)}\) denotes:
    11. a. Integer
    b. Rational numbers
    c. Whole numbers
    d. Irrational Number
  11. Which of these is a terminating decimal?
    12. a. \(\frac{7}{8}\)
    b. \(\frac{1}{3}\)
    c. \(\frac{2}{7}\)
    d. \(\frac{22}{7}\)

  12. Every integer is also a:
    13. a. Natural number
    b. Rational number
    c. Irrational number
    d. Prime number

  13. \(\sqrt{49}\) is a:
    14. a. Rational number
    b. Irrational number
    c. Integer
    d. d. Both (a) & (c)

  14. \(\pi\) is a:
    15. a. Rational number
    b. Irrational number
    c. Integer
    d. Whole Number

  15. Which of the following is not a whole number?
    16. a. 0
    b. 2
    c. -7
    d. 10

  16. A fraction is always a:
    17. a. Rational number
    b. Irrational number
    c. Integer
    d. Whole Number

  17. Which set contains 0 but no negatives?
    18. a. Natural numbers
    b. Whole numbers
    c. Integers
    d. Irrational Numbers

  18. Which of the following is true?
    19. a. All integers are rational
    b. All rational are integers
    c. All rational are irrationals
    d. All naturals are integers but not rational

  19. Which number fills the “gaps” between rational?
    20. a. Whole numbers
    b. Irrationals
    c. Irrationals
    d. Naturals

  20. Decimal 0.333… belongs to:
    21. a. Rational numbers
    b. Irrational numbers
    c. Integers
    d. Natural numbers


NUMBER SYSTEMS – Learning Resources

Detailed Notes
True / False
NCERT Solutions