แฟกทอเรียล

แฟกทอเรียล

12th Grade

10 Qs

quiz-placeholder

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แฟกทอเรียล

แฟกทอเรียล

Assessment

Quiz

Mathematics

12th Grade

Medium

Created by

Sasicha Meekul

Used 115+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 ค่าของ 15!12!3!\frac{15!}{12!3!}   ตรงกับข้อใด

600

555

455

315

210

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

เขียน 3!5! ให้อยู่ในรูปที่ไม่มีแฟกทอเรียลได้ตรงกับข้อใด

8

15

30

360

720

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

เขียน (n+4)(n+3) ให้อยู่ในรูปที่มีแฟกทอเรียลปรากฏอยู่ ได้ตรงกับข้อใด

(n+4)!(n+1)!\frac{\left(n+4\right)!}{\left(n+1\right)!}

(n+4)!(n+2)!\frac{\left(n+4\right)!}{\left(n+2\right)!}

(n+4)!(n+3)!\frac{\left(n+4\right)!}{\left(n+3\right)!}

(n+4)!(n+2)\frac{\left(n+4\right)!}{\left(n+2\right)}

(n+4)!(n3)!\frac{\left(n+4\right)!}{\left(n-3\right)!}

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

เขียน 6 x 5 x 4 ให้อยู่ในรูปที่มีแฟกทอเรียลปรากฏอยู่ ได้ตรงกับข้อใด

6!4\frac{6!}{4}

6!3\frac{6!}{3}

6!2\frac{6!}{2}

6!4!\frac{6!}{4!}

6!3!\frac{6!}{3!}

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

ถ้า (n3)!(n5)!\frac{\left(n-3\right)!}{\left(n-5\right)!}  =  132  แล้ว n มีค่าตรงกับข้อใด

16

15

14

9

8

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 4!5!3!2!\frac{4!5!}{3!2!}  มีค่าเท่าใด

24

36

60

240

720

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

ข้อใดไม่ถูกต้อง

7!3!=840\frac{7!}{3!}=840

4!6!3!5!=24\frac{4!6!}{3!5!}=24

n!(n2)!=n(n1)\frac{n!}{\left(n-2\right)!}=n\left(n-1\right)

(n+1)!(n1)!=n21\frac{\left(n+1\right)!}{\left(n-1\right)!}=n^2-1

n!(n1)!=n\frac{n!}{\left(n-1\right)!}=n

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