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Verified answer
101a = 18180a = 180
maka jumlah 3 bilangan terkecil =
(180-150) + (180-147) + (180-144)
30 + 33 + 36
jawabannya adalah 99
Verified answer
Bilangan kelipatan 3 => b = 3Sn = n/2 (2a + (n - 1)b)
S101 = 18180
101/2 (2a + (100)3) = 18180
(2a + 300) = 18180 . 2/101
2a + 300 = 360
2a = 60
a = 30
Jadi jumlah 3 bilangan terkecil
= 30 + 33 + 36
= 99