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سیٹ اور تفاعل

دسویں جماعت · ریاضی · 10 سوالات

نام: ____________________   تاریخ: ____________

  1. If A = {1, 2, 3} and B = {3, 4}, what is A union B?

    • A {3}
    • B {4}
    • C {1, 2, 4}
    • D {1, 2, 3, 4}
  2. If A = {1, 2, 3} and B = {3, 4}, what is A intersection B?

    • A {3}
    • B empty set
    • C {1, 2, 3, 4}
    • D {1, 2}
  3. The number of subsets of a set with 3 elements is:

    • A 6
    • B 8
    • C 3
    • D 9
  4. If f(x) = 2x + 3, what is f(4)?

    • A 8
    • B 14
    • C 11
    • D 7
  5. A relation in which every input has exactly one output is a:

    • A Function
    • B Set
    • C Matrix
    • D Ratio
  6. If A has 4 elements and B has 3 elements, how many elements are in A x B?

    • A 12
    • B 81
    • C 7
    • D 1
  7. The empty set is written as:

    • A { }
    • B {0}
    • C [ ]
    • D {1}
  8. If A = {1, 2} and B = {2, 3}, the set A - B is:

    • A {1, 2}
    • B {2}
    • C {3}
    • D {1}
  9. The domain of the function f = {(1, 2), (3, 4)} is:

    • A {1, 2, 3, 4}
    • B {4}
    • C {2, 4}
    • D {1, 3}
  10. A set with exactly one element is called a:

    • A Singleton
    • B Power set
    • C Universal set
    • D Empty set

جوابی کلید

1. D, 2. A, 3. B, 4. C, 5. A, 6. A, 7. A, 8. D, 9. D, 10. A

  1. The union has all elements of both sets.

  2. Only 3 is in both sets.

  3. 2³ = 8.

  4. f(4) = 2 x 4 + 3 = 11.

  5. This is the definition of a function.

  6. The Cartesian product has 4 x 3 = 12 ordered pairs.

  7. The empty set has no elements.

  8. The elements in A that are not in B.

  9. The domain is the set of first elements.

  10. A singleton has one element.