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Verified answer
104 + 108 + 112 + 116 + ... + 196 = ?a = bilangan awal = 104
b = beda = 4
Un = 196
a + (n - 1)b = 196
104 + (n - 1) × 4 = 196
104 + 4n - 4 = 196
4n + 100 = 196
4n = 196 - 100
4n = 96
n = 96 ÷ 4
n = 24
S₂₄ = (a + U₂₄)
= 12(104 + 196)
= 12(300)
= 3.600
Jadi, jumlah bilangan kelipatan 4 antara 100 dan 200 adalah 3.600