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因數倍數

Authored by 子軒曾 子軒曾

Mathematics

6th - 8th Grade

Used 3+ times

因數倍數
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6 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

光棍「1」是質數嗎?

不是

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

下列何者不是 60的質因數?

2

3

5

7

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

已知48=24×3,則下列何者是48的因數?

2×32

2×3

22×32

2×3×5

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

(甲)所有偶數都是合數。
(乙)所有奇數都是質數。

(丙) 1是質數。
(丁) 20~30間共有2個質數。
以上四個敘述中,正確的有幾項?

0

1

2

3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在76、459、147、237、1234、6590六個數當中,是2的倍數的有多少個?

1

2

3

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在0、1、2、3、29、63、91、97

這些數中,共有多少質數?

1

2

3

4

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