15. यदि A: B:C = 2: 3 : 4 हो, तो अनुपात А в с B CA बराबर होगा। (1) 8: 9 : 16 (3) 8: 9 : 24 (2) 8: १ : 12 (4) 4: 9 : 16

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15. (3) A : ( B: C=2: 3: 4 ) ( therefore frac{A}{B}=frac{2}{3}, frac{B}{C}=frac{3}{4}: frac{C}{A}=frac{4}{2}=2 ) ( therefore frac{mathrm{A}}{mathrm{B}}: frac{mathrm{B}}{mathrm{C}}: frac{mathrm{C}}{mathrm{A}}=frac{2}{3}: frac{3}{4}: frac{2}{1} ) ( =8: 9: 24 )

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