⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜
⬜⬜⬜⬛⬛⬜⬜⬜⬜⬜⬛⬛⬜⬜⬜
⬜⬜⬜⬛⬜⬛⬜⬜⬜⬛⬜⬛⬜⬜⬜
⬜⬜⬛⬜⬜⬛⬜⬜⬜⬛🎀⬜⬛⬜⬜
⬜⬛⬜⬜⬜⬛⬜⬜⬜⬛⬜⬜⬜⬛⬜
⬜⬛⬜⬜⬜⬜⬛⬛⬛⬜⬜⬜⬜⬛⬜
⬜⬛⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬛⬜
⬜⬛⬜⚫⬛⬜⬜⬜⬜⬜⬛⚫⬜⬛⬜
⬜⬛⬜⬜⬛⬜⬜⬜⬜⬜⬛⬜⬜⬛⬜
⬜⬛⬜⬜⬜⬜⬜🟡⬜⬜⬜⬜⬜⬛⬜
⬜⬛⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬛⬜
⬜⬛⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬜⬛⬜
⬜⬜⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬛⬜⬜
𝘵𝘩𝘦 𝘮𝘰𝘳𝘦 𝘺𝘰𝘶 𝘭𝘰𝘷𝘦 𝘢 𝘮𝘦𝘮𝘰𝘳𝘺 𝘵𝘩𝘦 𝘴𝘵𝘳𝘰𝘯𝘨𝘦𝘳 𝘢𝘯𝘥 𝘴𝘵𝘳𝘢𝘯𝘨𝘦𝘳 𝘪𝘵 𝘪𝘴 💗

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⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀  

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Problem: Prove that the sum of the first n positive integers can be expressed as:

n(n+1)/2

Prove:

1 + 2 + 3 + ... + n = n(n+1)/2

⠀⠀⠀⣀⡤⠔⠒⠉⠉⠉⠉⠑⠒⠒⠒⠢⢄⠀⠀⠀⠀⠀⠀
⠀⠀⣠⠞⢋⠁⠀⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠢⣀⠀⠀⠀
⢀⠜⠁⡴⠁⠀⡰⢉⠊⠀⠰⣦⡀⠐⠵⡰⡄⠀⠀⠀⠑⢄⠀⠀
⡎⠀⡞⢕⡄⡠⠇⠈⠀⠀⠀⣿⣿⡄⠈⠞⢰⠀⡆⠀⠀⠘⡄⠀
⡅⢸⡕⣀⢏⠠⡆⣤⠀⠀⠀⠣⢈⢿⡀⠀⠀⡇⡗⣀⠀⠰⡇⠀
⡁⢸⢨⠃⡠⠒⠚⠉⢣⡀⢀⠤⠤⢌⢣⠀⠀⡇⢃⣿⡆⠀⢡⠀
⡁⠘⢯⡆⢀⢤⣄⠀⠀⠉⠉⣀⣀⠀⠀⢱⣰⠁⢸⣿⣿⡄⠀⠇
⣿⠀⢸⣿⡌⠘⠿⠇⠀⠀⠀⠹⣿⡷⠀⠸⠁⠀⣸⣿⣿⣇⡀⡅
⢸⣰⠸⣿⡁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢰⠀⢀⣿⣿⣿⡟⢸⠜
⠈⢋⣷⣽⣷⡦⠤⡀⠢⠤⡆⠀⠀⣀⢠⣼⢀⣾⣿⣿⣿⣶⣶
⠀⢸⣿⡣⢼⠀⡀⣤⢼⡻⢀⢩⣀⣠⣾⣿⣿⣿⣿⣿⣿⣿⣿
𝐃𝐨𝐧’𝐭 𝐬𝐭𝐨𝐩 𝐮𝐧𝐭𝐢𝐥 𝐲𝐨𝐮’𝐫𝐞 𝐩𝐫𝐨𝐮𝐝 ✿
𝖜𝖎𝖘𝖍 𝖞𝖔𝖚 𝖍𝖆𝖕𝖕𝖞 𝖜𝖊𝖊𝖐𝖊𝖓𝖉 💕

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