ลำดับเรขาคณิต ม.5 บัตรคำ 10 ใบ

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10 questions

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1.

FLASHCARD QUESTION

Front

กำหนดลำดับ 1, 3, 9, 27, ... อัตราส่วนร่วมของลำดับนี้เท่ากับเท่าไร

Back

3

2.

FLASHCARD QUESTION

Front

พจน์ที่ 5 ของลำดับเรขาคณิต 1, 2, 4, ...

Back

16

3.

FLASHCARD QUESTION

Front

$1,\frac{1}{2},\frac{1}{4},...,\frac{1}{16}$ ลำดับนี้มีทั้งหมดกี่พจน์

Back

5

4.

FLASHCARD QUESTION

Front

4, 1, $\frac{1}{4}$ , _____ , _____ พจน์ที่สี่ของลำดับนี้เท่ากับเท่าไร

Back

$\frac{1}{16}$

5.

FLASHCARD QUESTION

Front

จงหาพจน์กลางของลำดับเรขาคณิต ระหว่าง 3 กับ 27

Back

9

6.

FLASHCARD QUESTION

Front

พจน์ทั่วไป หรือ พจน์ที่ n ของลำดับเรขาคณิต

Back

$a_n=a_1r^{\left(n-1\right)}$

7.

FLASHCARD QUESTION

Front

อัตราส่วนร่วมของลำดับนี้: $18,\ 9\ ,4.5,...$

Back

$\frac{1}{2}$

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