
baris dan deret aritmatika
Authored by Amalia Nursafitri
Mathematics
7th Grade
Used 4+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Hitunglah jumlah lima belas suku pertama dari deret bilangan 6 + 1 + (-4) + …
-435
435
-243
-100
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Diketahui rumus jumlah suku ke-n suatu deret bilangan adalah Sn = n/2 [ 3n + 1]. Tentukan jumlah 20 suku pertamanya !
100
610
160
660
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu gedung pertemuan terdapat 10 kursi pada baris pertamanya dan bertambah 5 kursi pada baris berikutnya. Pada gedung itu dapat memuat 10 baris kursi. Berapakah jumlah kursi pada gedung tersebut?
325
234
526
152
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu barisan aritmatika suku ke-2 dan suku ke-5 masing-masing 19 dan 31. Tentukan jumlah 30 suku pertama deret aritmatika tersebut!
2190
7429
1234
2134
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suku pertama dari barisan aritmatika adalah 3 dan bedanya = 4, suku ke-10 dari barisan aritmatika tersebut adalah …
39
29
49
9
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Diketahui barisan aritmatika sebagai berikut: 5, 8, 11, …
Tentukan:
Nilai suku ke-15 !
47
27
17
37
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Tentukan:
a. Suku ke-10
b. Jumlah sepuluh suku pertama
U10 = 37
S10 = 235
U10 = 47
S10 = 235
U10 = 37
S10 = 245
U10 = 77
S10 = 255
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