1. Suku kedua puluh deret aritmetika adalah 50. Jumlah 39 suku pertama deret itu adalah
PAT MATEMATIKA XI

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Other
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11th Grade
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Medium

naila salsabila
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30 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
(A) 1930
(B) 1940
(C) 1950
(D) 1980
(E) 2005
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
2. Dari deret aritmetika diketahui U6 + U9 + U12 +U15 = 20 maka S20 = (C)
(A) 50
(B) 80
(C) 100
(D) 200
(E) 400
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
3. Log a + log (ab) + log (ab2) + log (ab3) + ...
adalah deret aritmetika. Jumlah 6 suku per-tama deret itu ….
(A) 6 log a + 15 log b
(B) 6 log a + 12 log b
(C) 6 log a + 18 log b
(D) 7 log a + 15 log b
(E) 7 log a + 12 log b
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
4. Jumlah n suku pertama deret aritmetika Sn = 2n2 - n. Jumlah n suku berikutnya adalah …
(A) 4n2 - n
(B) 6n2- n
(C) 4n2 + n
(D) 2n2 - n
(E) 6n2 + n
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
5. Seutas tali dipotong lima bagian dengan pan-jang masing-masing membentuk barisan arit-metika. Bila tali yang terpendek adalah empat cm dan tali yang terpanjang 108 cm maka panjang tali semula adalah......... cm.
(A) 160
(B) 180
(C) 240
(D) 280
(E) 300
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
6. Dari deret geometri diketahui U1.U2.U3.U4.U5 = 32 maka U3 =…
(A) 1/4
(B) 2
(C) 2
(D) 4
(E) 8
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
7. Un merupakan suku ke n pada barisan arit-metika. Jika U1, U4, U10, Ux membentuk barisan geometri maka = …
(A) 20
(B) 22
(C) 24
(D) 26
(E) 28
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