<span>Спочатку</span><span> </span><span>1</span><span> </span><span>привітався</span><span> </span><span>з 4</span><span>, потім другий</span><span> </span><span>з 3-</span><span>ма</span><span>, потім 3</span><span>-й з</span><span> </span><span>2-ма</span><span>, потім</span><span> </span><span>4</span><span> </span><span>c</span><span> </span><span>1</span><span>-им</span><span>.</span><span>Всього</span><span> </span><span>4</span><span> </span><span>+</span><span> </span><span>3</span><span> </span><span>+</span><span> </span><span>2</span><span> </span><span>+</span><span> </span><span>1</span><span> </span><span>=</span><span> </span><span>10</span>
Наибольший делитель под буквой В)150 и 50