
翰林國中數學2下CH1-3-等比數列

Quiz
•
Mathematics
•
8th Grade
•
Hard
翰林數學 翰林數學
Used 9+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若 x , 4 , y , 9 , z 為等比數列,且其公比為正數,則 x×y×z 之值為何?
216
81
36
16
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一個等比數列的第 5 項為 128,公比為 2,則此數列的首項為何?
8
16
24
32
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一個等比數列的首項為 24,第 6 項為-768,則此數列的公比為何?
-3
-2
2
3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一個等比數列的第 3 項為 10,公比為 2,則此數列的第 8 項為何?
80
160
320
640
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列敘述何者正確?
7 , 0 , 7 , 0 , 7 , 0 是等比數列
若 a3-a2=a2-a1,則 a1 , a2 , a3 是等比數列
等比數列的公比可以為 0
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
已知一個等比數列的首項為 12,公比為-2,則此數列的第 6 項為何?
-384
192
384
768
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若(x+2)與(x-6)的等比中項為 x,則 x 的值為何?
-3
1
3
5
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