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Question
n একটি যোগবোধক জোড়সংখ্যা হলে (a + x)ⁿ এর বিস্তৃতিতে মধ্যপদ কোনটি?
n
2
+
1
তম পদ
(n-1) তম পদ
n তম পদ
(n+1) তম পদ
ANSWER : 1
Descrption
<p><strong>n যোগবোধক</strong> সংখ্যা হলে, বিস্তৃতির পদসংখ্যা হবে<strong> (n+1), যা বিজোড়।</strong></p><p>পদসংখ্যা <strong>বিজোড়</strong> হলে মধ্যপদ হয় <strong>একটি</strong>। </p><p>মধ্যপদ= <strong>(পদসংখ্যা+1)/2 </strong>= [(n+1)+1]/2 = (n+2)/2 = <strong>(n/2)+1 তম পদের মান।</strong></p><p> </p>
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