
6.แบบฝึกเรื่องแฟคทอเรียล 2
Authored by supol nilklang
Mathematics
12th Grade
Used 309+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
ถ้า (n+1)!/(n-2)! = 720 แล้ว (n+1)! มีค่าตรงกับข้อใด
10!
9!
11!
12!
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ถ้า 3n!/(n-4)! = (n-1)!/(n-6)! จงหาค่า n
10
2
6
10 ,2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(1!+2!+3!+4!+5!+6!+7!+...+100!)หารด้วย 240 จะเหลือเศษเท่าใด
0
15
150
153
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
ถ้า (n+3)!/(n-1)! = 1680 แล้ว n ตรงกับข้อใด
5
6
7
8
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2x(n+4)!(n-1)! = (n+5)!(n-2)! ค่าของ n ตรงกับข้อใด
5
6
7
8
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
2(n+1)!(n+1)! = n!(n+2)! แล้ว n ตรงกับข้อใด
0
1
2
3
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
(n-5)!n!5! = 30x(n-4)!n! แล้ว n2 ตรงกับข้อใด
64
49
81
36
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