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} ৭ + ৭ + ৭ = ১ X ৭ ২৪৭ -এর আগের এবং পরের সংখ্যা দুটি লিখে > বা < চিহ্ন দাও।t​

Answer» <html><body><p>Solution -</p><p>We Have ,</p><p></p><p>\begin{gathered} \large \sf{a_{5} +a_{7} = 52}\\ \\ \large \sf{ = a + 4d + a + 6d= 52}\\ \\ \large \sf2a + 10d \: \: - - - (1)\\ \\ \large \sf{a_{11} = a + 10d = <a href="https://interviewquestions.tuteehub.com/tag/46-317673" style="font-weight:bold;" target="_blank" title="Click to know more about 46">46</a>} \\ \\ \end{gathered} </p><p>a </p><p>5</p><p> </p><p> +a </p><p>7</p><p> </p><p> =52</p><p>=a+4d+a+6d=52</p><p>2a+10d−−−(1)</p><p>a </p><p>11</p><p> </p><p> =a+10d=46</p><p> </p><p> </p><p></p><p>♠ Multiplying Both Sides by 2 :</p><p></p><p>\begin{gathered}\large :\longmapsto\sf 2a + <a href="https://interviewquestions.tuteehub.com/tag/20d-1821878" style="font-weight:bold;" target="_blank" title="Click to know more about 20D">20D</a> = 92\: \: - - - (2) \\ \end{gathered} </p><p>:⟼2a+20d=92−−−(2)</p><p> </p><p> </p><p></p><p>♠ <a href="https://interviewquestions.tuteehub.com/tag/subtracting-3084512" style="font-weight:bold;" target="_blank" title="Click to know more about SUBTRACTING">SUBTRACTING</a> (1) From (2) , We <a href="https://interviewquestions.tuteehub.com/tag/get-11812" style="font-weight:bold;" target="_blank" title="Click to know more about GET">GET</a> :-</p><p></p><p>\begin{gathered}\sf10d = 40 \\ \\ \sf d = \cancel{\frac{40}{10} }\\ \\ \purple{ \Large :\longmapsto \underline {\<a href="https://interviewquestions.tuteehub.com/tag/boxed-7665690" style="font-weight:bold;" target="_blank" title="Click to know more about BOXED">BOXED</a>{{\bf d = 4} }}}\end{gathered} </p><p>10d=40</p><p>d= </p><p>10</p><p>40</p><p> </p><p> </p><p> </p><p> </p><p>:⟼ </p><p> d=4</p><p> </p><p> </p><p> </p><p> </p><p> </p></body></html>


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