
deret geometri
Authored by Mulyadi Mulyadi
Mathematics
10th Grade

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20 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui deret geometri 2, 4, 8, . . .jumlah 10 suku pertama deret tersebut adalah . . . .
1023
1024
2021
2023
2046
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui deret geometri dengan suku pertama 6 dan suku keempat adalah 48. Jumlah enam suku pertama deret tersebut adalah . . . .
368
369
378
379
384
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Seutas tali dipotong menjadi enam bagian dan panjang masing-masing membentuk barisan geometri. Jika potongan tali terpendek sama dengan 10 cm dan potongan tali terpanjang sama dengan 320 cm, maka panjang tali semula adalah . . . .
640 cm
630 cm
540 cm
530 cm
510 cm
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diketahui suku ke-2 deret geometri adalah 6 dan suku ke-5 adalah 162. Rumus jumlah n suku pertama deret tersebut adalah . . . .
Sn = 3 (2n - 1)
Sn = 3/2 (3n - 1)
Sn = 2 (3n - 1)
Sn = 3n - 1
Sn = n3
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu barisan geometri suku ke-6 = 2 dan suku ke-3 = -16, S5 adalah...
-40
-44
40
42
44
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Seutas tali dipotong menjadi tujuh bagian,dan panjang masing-masing potongan membentuk barisan geometri.Jika panjang potongan tali terpendek=6 cmdan panjang potongan tali terpanjang=384 cm,panjang keseluruhan tali tersebut adalah . . . .
378
390
570
762
1570
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suku pertama suatu deret geometri adalah 1 dan suku ke–4 sama dengan 27. Jumlah enam suku pertama deret tersebut adalah . . . .
81
121
243
364
729
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