RT @Rainmaker1973: A couple of curious facts about the numbers 1, 8, 18 and 81. - 81 is the only integer (except 1) which is the square of… 0 atbildes
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Ernests Štāls - mastodon.social/@ernests (2019-09-14 19:57:17) |
RT @Rainmaker1973: A couple of curious facts about the numbers 1, 8, 18 and 81. - 81 is the only integer (except 1) which is the square of… | |