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Verified answer
Mapel MatematikaBab Baris dan Deret
1 + 2 + ... + 84 = ?
Sn = n/2 (a + Un)
S84 = 84/2 (1 + 84)
S84 = 42 (85)
S84 = 3570
Jumlah 3 halaman terlewat = 3570 - 3498 = 72
Rata2 halaman terlewat = 72/3 = 24
22
24
26
Halaman genap tertinggi adalah 26