barisan geometri 16,24,36,54,..... tentukan suku ke 8
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barisan geometri 16,24,36,54,..... tentukan suku ke 8
1 Jawaban
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1. Jawaban arsetpopeye
16, 24, 36, 54, ... => a = 16
r = 24/16 = 3/2
U8 = ar^7
= 16 . (3/2)^7
= 16 . 2187/128
= 2187/8
= 273 3/8
= 273,375