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Question
If x⩽ 8 and y⩽ 3, it must be true that
x+y⩾ 5
x+y⩽11
x-y⩾5
x-y⩽5
ANSWER : 3
Descrption
<pre><math xmlns = "http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>⩾</mo><mn>8</mn></math> এবং <math xmlns = "http://www.w3.org/1998/Math/MathML"><mi>y</mi><mo>⩽</mo><mn>3</mn></math> <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>⇒</mo><mn>3</mn><mo>⩾</mo><mi>y</mi></math> এখন, x + 3 <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>⩽</mo></math> 8 + y <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>∴</mo></math> x - y <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>⩾</mo></math> 5 </pre>
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