यदि (10a3+4b3) : (11a3-15b3) = 7 : 5, है, तो (3a+5b) : (9a-2b) =? 

  • 1

    10:13

  • 2

    5:4

  • 3

    3:2

  • 4

    8:7

Answer:- 1

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