Hi, are numbers generally considered adjectives when used as below?<br/><br/>The Tlinget People descended from many of the <b>twenty</b> Native American Pacific tribes.<br/><br/>Their lives were not disturbed much by outsiders for another <b>170</b> years.<br/><br/>They spoke about <b>sixty</b> languages belonging to <b>three </b> major native language “families.”<br/><br/>Today, only about <b>four thousand</b> Tlinget people remain and fewer than <b>twelve</b> languages are still spoken.<br/><br/>I would say "yes". Am I incorrect?