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Question
A courtyard 25 m long and 16 m broad is to be paved with bricks of dimension 20 cm by 10 cm . The total number of bricks required is :
18000
20000
25000
None of these
ANSWER : 2
Descrption
<pre>Number of bricks = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfenced><mfrac><mrow><mi>A</mi><mi>r</mi><mi>e</mi><mi>a</mi><mo> </mo><mi>o</mi><mi>f</mi><mo> </mo><mi>c</mi><mi>o</mi><mi>u</mi><mi>r</mi><mi>t</mi><mi>y</mi><mi>a</mi><mi>r</mi><mi>d</mi></mrow><mrow><mi>A</mi><mi>r</mi><mi>e</mi><mi>a</mi><mo> </mo><mi>o</mi><mi>f</mi><mo> </mo><mn>1</mn><mo> </mo><mi>b</mi><mi>r</mi><mi>i</mi><mi>c</mi><mi>k</mi></mrow></mfrac></mfenced></math> <math xmlns = "http://www.w3.org/1998/Math/MathML"><mo> = </mo><mfenced><mfrac><mrow><mn>2500</mn><mo>×</mo><mn>1600</mn></mrow><mrow><mn>20</mn><mo>×</mo><mn>10</mn></mrow></mfrac></mfenced></math> = 20,000 </pre>
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