According to Big Bang Theory, the Universe began about _____ billion years ago. A. 10 – 20 B. 20 – 30 C. 30 – 40 D. 40 – 50 💾 Save the Page as PDF: 📥𝐃𝐨𝐰𝐧𝐥𝐨𝐚𝐝 𝐍𝐨𝐰! Related Read more articles Previous PostThe planets visible to us without using a telescope are _____. Next PostBiosensor is used to measure? If the aforementioned Answer is Wrong. Leave a Reply with an authentic source.Cancel reply