
Formatif 2
Authored by Jeannete Ochtavianny
Mathematics
8th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Diketahui barisan bilangan 2, 8, 4, 12, 6, 16, 8, 20, ....
Suku ke-15 barisan tersebut adalah
16
99
102
105
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Diketahui barisan suku ke 3, 8, 13, 18, 23, ...
Rumus suku ke-n dari barisan tersebut adalah ....
2n + 1
4n - 1
3n
5n - 2
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Diketahui pola bilangan mempunyai selisih kedua yang tetap, yaitu 3 dan suku pertamanya adalah 1. Barisan bilangan tersebut adalah ....
1, 2, 6, 13, 23, 36
1, 4, 7, 10, 13, 16
1, 2, 5, 10, 17, 26
1, 3, 5, 8, 11, 14
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
Perhatikan barisan bilangan berikut
1, 3, 5, 7, 9, 11, ...
Tentukan suku ke-27
54
53
25
23
5.
FILL IN THE BLANK QUESTION
1 min • 10 pts
Perhatikan bilangan berikut
7, 14, 21, 28, 35
Tentukan rumus umum suku ke-n
6.
FILL IN THE BLANK QUESTION
5 mins • 10 pts
Perhatikan barisan bilangan berikut
1, 4, 7, 10, 13, ...
Suku ke-n dari barisan bilangan ini adalah 103. Tentukan nilai ke-n
7.
MULTIPLE CHOICE QUESTION
30 sec • 15 pts
Perhatikan barisan bilangan berikut
2, 4, 6, 8, 10, ...
1, 3, 5, 7, 9, ...
1, 4, 9, 16, 25, ...
Secara berturut-turut tentukan rumus umum suku ke-n dari barisan bilangan di atas
Un= 2n
Un= 2n-1
Un= n2
Un= 2n-1
Un= 2n
Un= 2n
Un= 2n
Un= 2n+1
Un= 2+n
Un= n2
Un= 2n-1
Un= 2n
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