a : b = 2 : 3 ಮತ್ತು b : c = 2 : 3 ಆಗಿದ್ದರೆ, (3a2 + b2 + c2 ) : (a2 + 2b2 + c2 ) ಮೌಲ್ಯ ಯಾವುದು?

1
169 : 165
2
5 : 7
3
7 : 5
4
165 : 169

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