
等差数列、等比数列「
Quiz
•
Mathematics
•
10th Grade
•
Hard
伊藤悠治 伊藤悠治
Used 2+ times
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7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
初項2、公差3の等差数列の一般項anを求めなさい。
an=3n-2
an=3n-1
an=3n+1
an=3n+2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
初項2、公差3の等差数列{an }の第20項を求めなさい。
57
59
61
63
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
初項3,公差-4の等差数列{an}において,-53は第何項か。
第13項
第14項
第15項
第16項
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
公差が4,第7項が25の等差数列{an}の一般項を求めよ。
an=3n-3
an=3n-4
an=4n-3
an=4n-4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
初項1,公比2の等比数列{an}の一般項を求めよ。
an=2n-1
an=2n
an=2n+1
an=2n+2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
初項-3,公比3の等比数列{an}の一般項を求めよ。
an=-3n
an=-3n+1
an=3n
an=3n+1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
次の等比数列{an}の一般項を求めよ。
2,-12,72,……
an=3・(-6)n+1
an=2・(-6)n+1
an=3・(-6)n-1
an=2・(-6)n-1
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