下列哪一個是等差級數?
2下 1-2 等差級數

Quiz
•
Mathematics
•
8th Grade
•
Hard
康軒數位 康軒數位
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
計算1+3+5+7+……+19的和,則下列哪一個列式是正確的?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在1~100中,6的倍數的總和是多少?
880
816
810
804
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在-7與17之間插入m個數,使其為等差數列,若此等差數列的和為120,則m=?
24
22
10
12
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
阿芳最近開了一家泡沫紅茶店,開張當天獲利200元,第二日獲利300元,第三日獲利400元,……。以後每日的獲利皆增加100元,求該泡沫紅茶店營業多少日後,共可獲利17000元?
15日
16日
17日
18日
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某家庭有六個小孩,每個相鄰的小孩其年齡差均為兩歲,若六個小孩其年齡和為96歲,則下列敘述哪一個是錯誤的?
老大為23歲
排行老二為19歲
排行老四為15歲
排行老么為11歲
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