Video/100⁹⁹和99¹⁰⁰哪个大？谷爱凌在中国上10天课，能顶美国上一年
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李, 永乐 (Feb 10, 2022). 100⁹⁹和99¹⁰⁰哪个大？谷爱凌在中国上10天课，能顶美国上一年. local page: 李永乐老师.
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At the end of this video (the 712 seconds), he talked about why using 3 as the base of number representation system is most efficient. See Why three?.