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Question

a:b=4:5 এবং b:c=6:7 হলে, a:b:c=

20:35:42

24:30:35

35:30:24

42:35:20

ANSWER : 2

Descrption

<pre>
<math xmlns = "http://www.w3.org/1998/Math/MathML"><mspace linebreak
 = "newline"/><mi>a</mi><mo>:</mo><mi>b</mi><mo>&#xA0;</mo><mo>
 = </mo><mn>4</mn><mo>:</mo><mn>5</mn><mspace linebreak = "newline"/><mo> = </mo><mo>(</mo><mn>4</mn><mo>&#xD7;</mo><mn>6</mn><mo>)</mo><mo>&#xA0;</mo><mo>:</mo><mo>&#xA0;</mo><mo>(</mo><mn>5</mn><mo>&#xD7;</mo><mn>6</mn><mo>)</mo><mspace linebreak
 = "newline"/><mo> = </mo><mn>24</mn><mo>&#xA0;</mo><mo>:</mo><mo>&#xA0;</mo><mn>30</mn><mspace linebreak = "newline"/><mo>&#xA0;</mo><mi>b</mi><mo>:</mo><mi>C</mi><mo>&#xA0;</mo><mo>
 = </mo><mn>6</mn><mo>:</mo><mn>7</mn><mspace linebreak = "newline"/><mo> = </mo><mo>(</mo><mn>6</mn><mo>&#xD7;</mo><mn>5</mn><mo>)</mo><mo>&#xA0;</mo><mo>:</mo><mo>&#xA0;</mo><mo>(</mo><mn>7</mn><mo>&#xD7;</mo><mn>5</mn><mo>)</mo><mo>&#xA0;</mo><mo> = </mo><mn>30</mn><mo>&#xA0;</mo><mo>:</mo><mo>&#xA0;</mo><mn>35</mn><mspace linebreak
 = "newline"/><mo>.</mo><mo>'</mo><mo>.</mo><mo>&#xA0;</mo><mi>a</mi><mo>:</mo><mi>b</mi><mo>:</mo><mi>c</mi><mo>&#xA0;</mo><mo> = </mo><mn>24</mn><mo>&#xA0;</mo><mo>:</mo><mo>&#xA0;</mo><mn>30</mn><mo>&#xA0;</mo><mo>:</mo><mo>&#xA0;</mo><mn>35</mn><mo>&#xA0;</mo></math>
</pre>

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