Jumlah n suku pertama suatu deret aritmetika adalah Sn=n2 + 3n. Suku ke-5 deret tersebut adalah ….
Penilaian Harian 1

Quiz
•
Mathematics
•
11th Grade
•
Medium
Yunizar Nizar
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15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
12
14
16
18
20
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pada sebuah barisan geometri diketahui bahwa U1=3 dan U9 = 768. Suku ke-7 barisan tersebu t adalah ….
36
96
192
256
384
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suku ke-2 dan suku ke-5 suatu barisan geometri berturut-turut 14 dan 112. Suku ke-7 barisan tersebut adalah ….
384
448
480
768
896
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Barisan bilangan 2, 5, 10, 17, 26, …. Rumus suku ke-n barisan itu adalah ….
Un= 3n - 1
Un = 3 - n
Un = 1 + n2
Un = n2 - 1
un = 5 - 2n
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Rumus jumlah n suku pertama deret aritmetika adalah Sn = n2 – 19n. Beda deret tersebut adalah ….
16
8
4
2
-2
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Rumus suku ke-n dari barisan 2, 6, 12, 20, …. Adalah Un = ….
n (n + 1)
3n - 1
2n2
n2 + 1
2n
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Jumlah n suku pertama suatu deret aritmetika adalah Sn= 2n2 – 4n. beda barisan tersebut adalah ….
1
2
3
4
5
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