जर A : B =5:7 , B : C = 6 : 11 तर A :B : C = ?
1) 30:42:77
2) 40:50:80
3) 32:42:86
4) 30:42:78
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1) 30:42:77
( MPSC लेखिक परीक्षा मुख्य 2018)
स्पष्टीकरण :
A : B : C
5 : 7 : 7
6 : 6 : 11
——————–
30 : 42 : 77