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    Mathematics
    Grade-4-
    Easy

    Question

    Rosy used a rule to make a number pattern. Her rule is to add by 3. The number pattern that follows Rosy’s rule is

    1. 2, 4, 8, 16, 32    
    2. 3, 6, 12, 14, 20    
    3. 9, 12, 15, 18, 21    
    4. 2, 4, 6, 8, 10, 12    

    hintHint:

    In the question a rule is given which Rosy used to make a number pattern. We need to identify the option which follows Rosy's rule. For that we need to analyze each of the options.

    The correct answer is: 9, 12, 15, 18, 21

      Step by step solution:
      Rosy’s rule: add 3
      Option A: 2, 2 + 3 = 5 ≠ 4, so option A can be eliminated
      Option B: 3, 3 + 3 = 6, 6 + 3 = 9 ≠ 12, so option B can be eliminated
      Option C: 9, 9 + 3 = 12, 12 + 3 = 15, 15 + 3 = 18, 18 + 3 = 21, so option C is our required answer.
      Option D: 2, 2 + 3 = 5 ≠ 4, so option D can be eliminated.
      Hence, option(c) is the correct option.

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