References: Inder J. Taneja, 2020 In Numbers: Mathematical Style – Revised,    Zenodo, December 31, 2019, pp. 1-37,   http://doi.org/10.5281/zenodo.3596193. Inder J. Taneja, Single Digits Representations of Numbers from 1 to 20000, https://inderjtaneja.com/2019/01/01/single-letter-representations-of-numbers-from-1-to-20000/ Inder J. Taneja, Patterns in Selfie and Semi-Selfie Numbers. Zenodo, February 6, 2019,  pp. 1-51,  http://doi.org/10.5281/zenodo.2563202. Inder J. Taneja, Same Digits Equality Expressions: Power and Plus, Zenodo, January … Continue reading 138th, 139th, 140th and 141th Days of Year: 17.05.2020, 18.05.2020, 19.05.2020 and 20.05.2020 – Parts 1 and 2