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<html><body><h2 id="content-id-8472503961-2"><b>Data Sufficiency Questions Overview</b></h2><p>Data Sufficiency Questions have a good weightage in the Ssc Chsl Exam and the type of question asked in Ssc Chsl exam is similar to the question mentioned below. It has been solved and explained by KD Live Experts under the guidance of Neetu Mam and they have tried to elaborate the concept used in Data Sufficiency Questions.</p><h2 id="content-id-4087235916-3"><b>Question On Data Sufficiency </b></h2>If x4 + x2 y2 + y4 = 273 and x2 - xy + y2 = 13, then the value of xy is :
<div class="row show--dificulty--bar" style="margin-top:8px;"><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex !important;border-right:0.1px solid #eee;"><h3 style="font-size:12px !important;">Difficulty : Moderate </h3></div><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex;"><h3 style="font-size:12px !important;"> Average Time : 33 Seconds </h3></div></div><h2 id="content-id-1206459783-4"><b> Data Sufficiency Questions Options</b></h2><ol><li><p>4</p>
</li><li><p>10</p>
</li><li><p>6</p>
</li><li><p>8</p>
</li></ol> <h2 id="content-id-9087634125-5"><b> Data Sufficiency Questions Solution</b></h2><p>The correct answer is <strong>option 1 </strong>i.e <strong>4</strong></p>

<p><strong>Explanation:</strong></p>

<p>x<sup>2</sup> - xy + y<sup>2</sup> = 13 ---(1)</p>

<p>⇒ x<sup>4</sup> + x<sup>2</sup> y<sup>2</sup> + y<sup>4</sup> = 273</p>

<p>⇒ x<sup>2</sup> + xy + y<sup>2</sup>)(x<sup>2</sup> - xy + y<sup>2</sup>) = 273 ---(2)</p>

<p>put the value of eq (1) in eq (2)-</p>

<p>(x<sup>2</sup> + xy + y<sup>2</sup>)(13) = 273</p>

<p>⇒ (x<sup>2</sup> + xy + y<sup>2</sup>) = 21</p>

<p>⇒ (x<sup>2</sup> + xy + y<sup>2</sup> + xy - xy) = 21</p>

<p>(x<sup>2</sup> - xy + y<sup>2</sup> + 2xy) = 21</p>

<p>put the value from eq(1)</p>

<p>13 + 2xy = 21</p>

<p>⇒ 2xy = 8</p>

<p>⇒ xy = 4</p>

<p>∴ The value of xy is 4.</p>
<h2 id="content-id-1436890725-6"><b> Data Sufficiency Questions Tips and Tricks</b></h2><img loading="lazy" src="https://study.kdcampus.live/questions-blog-pdf/Data_Sufficiency_Questions_Tips_and_Tricks.png" alt="Data Sufficiency Questions Tips and Tricks" height="260" width="480"><ol><li>Try to solve Data Sufficiency Questions without taking any help from the solutions.</li><li>Data Sufficiency Questions require proper usage of concept so firstly read the question thoroughly and then use the right concept. </li><li>In case you're not able to solve the question in less than 30 seconds in the exam then you should skip the question and move to the next question.</li></ol><h3><b>Daily Current Affairs </b></h3><img loading="lazy" src="https://study.kdcampus.live/questions-blog-pdf/Daily_Current_Affairs.png" alt="Daily Current Affairs" height="260" width="480"><p>KD Live is providing Current Affairs on a daily basis for SSC and a current affairs quiz too for the practice. 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The correct answer is option 1 i.e 4 - Data Sufficiency Questions are asked in Ssc Chsl exams and your question has been explained by experts like Neetu Mam.

 Data Sufficiency Questions Tips and Tricks

If x4 x2 y2 y4 - Data Sufficiency Questions for Ssc Chsl

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