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8D 2/21測驗

Authored by 蔡詠青 蔡詠青

Mathematics

8th Grade

Used 1+ times

8D 2/21測驗
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11 questions

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1.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

首項a1=5,公差d=5,則a9=?

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

有一等差數列 1, 4, 7,10,13,15 ,則公差d=?

1

15

3

6

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

若有一數列 6,6,6,6,6,是否為等比數列?是的話公比r=?

不是

是,公比r=0

是,公比r=6

是,公比r=1

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

請問數列1,2,4,6,8,是否為等比數列?

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

已知有一等差數列3,5,7,....,33,則此等差數列共有幾項?

14

33

15

16

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

首項a1=10,公差d= -3,則a7=?

-8

28

-11

21

7.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

若有一等比數列9,-9,9,-9,9,-9,則公比r=?

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