Ninety Lightyears<p>Did you know that the concept of zero was first developed in ancient India? 🧮🇮🇳 <a href="https://mstdn.social/tags/MathTrivia" class="mention hashtag" rel="tag">#<span>MathTrivia</span></a> <a href="https://mstdn.social/tags/FunFact" class="mention hashtag" rel="tag">#<span>FunFact</span></a> <a href="https://mstdn.social/tags/DidYouKnow" class="mention hashtag" rel="tag">#<span>DidYouKnow</span></a></p>