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Twelve new students are standing in a line. How many different ways can the first seven students in line order themselves?

 Jul 7, 2020
 #1
avatar+744 
-2

12 choose 7 i believe, or twelve choose 5, same thing....

 Jul 7, 2020
edited by whymenotsmart  Jul 7, 2020
 #2
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+1

 

 

12!= 12*11*10*9*8*7*6*5*4*3*2*1= 479001600 ways?

 

 

 

I think that is the answer but I am not sure...(srry if it's wrong)

 

 

 

laughlaughlaugh

 Jul 7, 2020
 #3
avatar+744 
-2

dunno, very creative tho....

 Jul 7, 2020
 #4
avatar+744 
-2

it ok

 Jul 7, 2020
 #5
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+1

Lol! Thx

 

laughlaughlaugh

Guest Jul 7, 2020
 #6
avatar+26620 
+1

Since we are only concerned about the first 7 students....ignore the other 5

 

7 P 7 = 5040 ways

 Jul 7, 2020
 #7
avatar+744 
-2

dam, EP, why are you always so smart!!!???

 Jul 7, 2020
 #8
avatar+26620 
+1

I am a very good guesser !    Sometimes I guess incorrectly......cheeky

ElectricPavlov  Jul 7, 2020
 #9
avatar+744 
-2

lol!:)

 Jul 7, 2020

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