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Question

Which of the following statements is correct?
  1. Subtraction is commutative for integers.
  2. Division is associative for rational numbers.
  3. Multiplication is not associative for whole numbers.
  4. Addition is closed for natural numbers.

A
Subtraction is commutative for integers.
B
Multiplication is not associative for whole numbers.
C
Addition is closed for natural numbers.
D
Division is associative for rational numbers.
Solution
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Q2

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Q4
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Q5
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