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#1 2006-11-15 07:06:58

xtc
Guest

Can Anyone Help Me With This Problem?

I HAVE FORTY FIVE NUMBERS (1 TO 45) IF I HAVE TO USE FIVE OF THOSE NUMBERS
(EG; 2 - 8 - 15 - 22- 39)
HOW MANY DIFFERENT SETS OF FIVE ARE THERE IN ORDER TO ACHIVE ALL VARIATIONS POSSIBLE?

HELP PLEASE!!dunno

#2 2006-11-15 07:55:54

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

Re: Can Anyone Help Me With This Problem?

This needs us to use the binomial distribution. There are 45C5 (or, if you prefer, 45!/[5!*(45-5)!]) ways of choosing 5 numbers from 45 options, and my calculator says that that is 1,221,759.


Why did the vector cross the road?
It wanted to be normal.

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#3 2006-11-15 09:44:30

xtc
Guest

Re: Can Anyone Help Me With This Problem?

Are you sure ?
dizzy

#4 2006-11-15 10:23:08

pi man
Member
Registered: 2006-07-06
Posts: 251

Re: Can Anyone Help Me With This Problem?

Looks right to me.

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#5 2006-11-16 00:40:04

xtc
Guest

Re: Can Anyone Help Me With This Problem?

thx allot your a gr8 helpwave

#6 2006-11-17 05:42:50

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

Re: Can Anyone Help Me With This Problem?

Do they have to be in ascending order?


igloo myrtilles fourmis

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