國中數學二下1-2

國中數學二下1-2

8th Grade

10 Qs

quiz-placeholder

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國中數學二下1-2

國中數學二下1-2

Assessment

Quiz

Education

8th Grade

Practice Problem

Medium

Created by

康軒 國中

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

以下何者為等差級數?_x000B_

1+5+25+125+625
1-5-9-13-17
1+5+9+13+17
1+5+6+11+17

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

以下何者為等差級數?_x000B_

1+2+3+5+6
1+2+4+3+5
1+(-2)+3+(-4)+5
1+2+3+4+5

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

設一等差級數前31項總和為1490,前30項總和為980,則此級數第31項為多少?_x000B_

530
510
460
430

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

若一等差級數的前9項和為72,第9項為20,則下列敘述何者正確?_x000B_

第8項為64
第8項為52
前8項和為52
前8項和為92

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

若一等差級數的前四項分別為a,a+d,a+2d,a+3d,則此等差級數前十項之和為多少?(以a、d表示)_x000B_

2a+90d
20a+90d
a+45d
10a+45d

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

教室內有5排座位,每一排座位數均比前一排座位數多1個,第一排共有3個座位,請問此教室共有幾個座位?_x000B_

15
20
25
30

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

表演廳有10排座位,每一排座位數均比後一排座位數少2個,最後一排共有30個座位,請問此表演廳共有幾個座位?_x000B_

200
210
220
230

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