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24. यदि A : B = 3: 5 तथा B : C = 4:7 हो, तो A :B : C होगा (1) 6: 9: 14 (2) 3: 5: 7 (3) 12 : 20: 21 (4) 12 : 20 : 35

11th - 12th Class
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24.(4) A: B=3:5= 12:20 B: C= 4:7= 20:35 :: A:B:C= 12:20:35
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