奧數

奧數

7th - 8th Grade

6 Qs

quiz-placeholder

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奧數

奧數

Assessment

Quiz

Mathematics

7th - 8th Grade

Practice Problem

Medium

Created by

Wei Jie Liang

Used 10+ times

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6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Factorial (階乘)用以下哪個符號表示?

X

@

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

5!=

5+4+3+2+15+4+3+2+1

5÷4÷3÷2÷15\div4\div3\div2\div1

5×4×3×2×15\times4\times3\times2\times1

543215-4-3-2-1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 5×16=5!\times\frac{1}{6!}= 

 15\frac{1}{5!}  

 16\frac{1}{6}  

5!

4!

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 (n+1)!n!\frac{\left(n+1\right)!}{n!}  

 (n+1)!\left(n+1\right)!  

 n!n!  

 nn  

 n+1n+1  

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

選擇正確的公式

Z2 = X2 + Y2Z^2\ =\ X^2\ +\ Y^2

X + Y = ZX\ +\ Y\ =\ Z

X2 + Z2 = Y2X^2\ +\ Z^2\ =\ Y^2

X + Y = Z\sqrt{X}\ +\ \sqrt{Y}\ =\ \sqrt{Z}

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

求c

25

5

7

9

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