Math equation enquiry

S

shermaine

New Member

• May 3, 2011

• #1

(150!) / (1!(150-1)!, since the n is large, i can just let it be 150?
As it's a big number and calculator cant be used.
Please advise how should i calculate it?

 

jpanhalt

Well-Known Member

Most Helpful Member

• May 3, 2011

• #2

Your equation has some typos in it. Please review and repost the correct version. An answer based on what we assume you mean may be misleading and cause further confusion.

John

 

P

Pommie

Well-Known Member

Most Helpful Member

• May 3, 2011

• #3

Assuming it reduces to 150!/149! then the answer is pretty obvious.

Mike.

 

S

srstought

New Member

• May 3, 2011

• #4

Simple division of series

(150!) / (1!(150-1)! = (150!)/(1(150-1)! = (150!)/(150-1)! = 150!/149!=

(150*149*148*...*1)/(149*148*...*1) = 150*(149*148*...*1)/(149*148*...*1)=

150*1/1 = 150

 

ParkingLotLust

Member

• May 3, 2011

• #5

Here, this should help

 

S

shermaine

New Member

• May 3, 2011

• #6

(150!) / (1!(150-1)!), since the n is large, i can just let it be 150?
As understand 150! when using calculator, there is error. May i know if there is any shortcut way of doing?
And how about when it is (150!) / (2!(150-2)!) or (150!) / 3!(150-3)!). Please advise. Thanks.

 

P

Pommie

Well-Known Member

Most Helpful Member

• May 3, 2011

• #7

(150!) / (3!(150-3)!) = (150!/147!)/3! = (150*149*148)/6

Can you see how that works?

Mike.
BTW, you are still typing some equations wrong. I.E. (150!) / 3!(150-3)!)