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Q:

यदि (a+b) : (b+c) : (c+a) = 7 :6 : 5 और  (a+b+c)=27 है तो  $$ {1\over b}:{1\over a}:{1\over c}$$ का मान होगा—

  • 1
    3 :6 :4
  • 2
    3 : 4 : 6
  • 3
    4 :3 : 2
  • 4
    9: 3: 4
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Answer : 2. "3 : 4 : 6"

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