MathematicsFind which of the following are in proportion?

Find which of the following are in proportion?


  1. A
    33,44, 66, 88
  2. B
    33, 88, 55, 12
  3. C
    Both
  4. D
    None 

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    Solution:

         Given the proportions 33, 44, 66, 88 and 33, 88, 55, 12.
    For option 1)
    Product of extremes of 33, 44, 66, 88.
    33×88=2904   Product of means of 33, 44, 66, 88.
    44×66=2904   Product of extremes = Product of means.
    The given numbers are in proportion.
    For option 2)
    Product of extremes of 33, 88, 55, 12.
    33×12=396   Product of means of 33, 88, 55, 12.
    88×55=4840   Product of extremes Product of means.
    The given numbers are not in proportion.
    The given numbers, 33, 44, 66, 88 are in proportion.
    Hence option 1 is the answer.
     
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