<h1>Решение:</h1>
<ol>
<li>
a) 1728 = 1 * 82 + 7 * 81 + 2 * 80 = 64 + 56 + 2 = 12210</li>
<li>
б) 21916 = 2 * 162 + 1 * 161 + 9 * 160 = 512 + 16 + 9 = 53710</li>
<li>
в) 1010102 = 1 * 25 + 0 * 24 + 1 * 23 + 0 * 22 + 1 * 21 + 0 * 20 = 32 + 0 + 8 + 0 + 2 + 0 = 4210</li>
<li>
г) 2436 = 2 * 62 + 4 * 61 + 3 * 60 = 72 + 24 + 3 = 9910</li>
</ol>
<p><strong>Ответ:</strong> 1728 = 12210; 21916 = 53710; 1010102 = 4210; 2436 = 9910</p>