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Verified answer
Kelas 7 MatematikaBab Pola Bilangan
Penjumlahan berurutan bilangan asli = 1/2 . n . (n + 1)
Penjumlahan 1 sampai 10.000
= 1/2 . 10.000 . (10.000 + 1)
= 5.000 . 10.001
= 50.005.000