
Baris dan Deret
Authored by Nurul Habibatul Ummah
Mathematics
8th Grade
Used 10+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suku pertama dari suatu barisan adalah 29. Barisan tersebut mempunyai beda -3 di setiap urutannya. Nilai suku ke-15 dari barisan tersebut adalah ....
81
-81
13
-13
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di sebuah panggung gembira ditata letak duduk penonton yang bervariasi. Baris paling depan berisi 10 kursi. Baris kedua berisi 14 kursi. Baris ketiga bertambah 4 kursi dari kursi depannya, begitu juga seterusnya sampai ada 15 baris kursi. Jumlah keseluruhan kursi penonton adalah ....
580 kursi
570 kursi
228 kursi
258 kursi
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah bola memantul dari lantai sampai ke ketinggian 72 cm. Setiap kali memantul, ketinggian bola adalah dua pertiga pemantulan sebelumnya. Jarak yang ditempuh bola sampai berhenti adalah .... cm.
612
216
432
515
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika Sn= n² +3n adalah jumlah n suku pertama dari suatu deret aritmatika, maka suku ke-10 deret tersebut adalah ...
17
22
30
25
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suku ke-9 dari barisan 3, 9, 27 ,81, .... adalah ...
16983
18963
19683
13689
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suku ke-15 dari barisan 20, 17, 14, 11, ... adalah ....
-8
-12
-22
-24
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bilangan-bilangan berikut merupakan penjumlahan dari dua buah bilangan.Yang merupakan penjumlahan dari dua bilangan berurutan adalah ....
*Clue: perhatikan angka terakhir saja
2.304.450
4.239.123
903.838
32.879.124
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