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Q:

यदि p : q : r = 1: 2: 4, तब  $$\sqrt{5p^{2}+q^{2}+r^{2}}$$ के बराबर है।

  • 1
    8
  • 2
    2q
  • 3
    5p
  • 4
    4r
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Answer : 3. "5p"

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