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Question

a : b=2 : 3 এবং b : C = 6: 7 হলে a: c = কত?

2 : 6

3 : 7

2 : 7

4 : 7

ANSWER : 4

Descrption

দেওয়া আছে,a : b = 2 : 3=&gt;&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">a</mi><mo>=</mo><mfrac><mrow><mn>2</mn><mi mathvariant="normal">b</mi></mrow><mn>3</mn></mfrac></math>আবার, b : C = 6 : 7=&gt;&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">c</mi><mo>=</mo><mfrac><mrow><mn>7</mn><mi mathvariant="normal">b</mi></mrow><mn>6</mn></mfrac></math>এখন, &nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">a</mi><mo>:</mo><mi mathvariant="normal">c</mi><mo>=</mo><mfrac><mrow><mn>2</mn><mi mathvariant="normal">b</mi></mrow><mn>3</mn></mfrac><mo>:</mo><mfrac><mrow><mn>7</mn><mi mathvariant="normal">b</mi></mrow><mn>6</mn></mfrac><mo>=</mo><mfrac><mstyle displaystyle="true"><mfrac><mrow><mn>2</mn><mi>b</mi></mrow><mn>3</mn></mfrac></mstyle><mstyle displaystyle="true"><mfrac><mrow><mn>7</mn><mi>b</mi></mrow><mn>6</mn></mfrac></mstyle></mfrac><mo>=</mo><mfrac><mn>4</mn><mn>7</mn></mfrac><mo>=</mo><mn>4</mn><mo>:</mo><mn>7</mn></math>&nbsp;

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