यदि A:B = 3:7 और B:C = 7:9 हो, तो A:C _________ के बराबर है।  (Lower-II 30.09.2019 Shift-Ist, 10 AM)

  • 1

    3:7

  • 2

    2:3

  • 3

    3:1

  • 4

    1:3

Answer:- 4

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