Penjelasan dengan langkah-langkah:
152 , 151 , 150 , ....
a = 152
b = 151 - 152 = -1
• Mencari S26.
Sn = n/2 . (2a + (n - 1).b)
S26 = 26/2 . (2.152 + (26 - 1).(-1))
S26 = 13 . (304 + 25(-1))
S26 = 13 . (304 - 25)
S26 = 13 . 279
S26 = 3627
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Penjelasan dengan langkah-langkah:
152 , 151 , 150 , ....
a = 152
b = 151 - 152 = -1
• Mencari S26.
Sn = n/2 . (2a + (n - 1).b)
S26 = 26/2 . (2.152 + (26 - 1).(-1))
S26 = 13 . (304 + 25(-1))
S26 = 13 . (304 - 25)
S26 = 13 . 279
S26 = 3627