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Quick Probability Q

DB10 · 2010-06-13 13:15:15

Anyone have any tips how to remember when to use the P button and when to use the C button on the calculator? I always mix them up...

13-06-2010 2:15pm

#1

DB10

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Anyone have any tips how to remember when to use the P button and when to use the C button on the calculator?

I always mix them up...

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Comments

#2 13-06-2010 2:22pm

ajjmk

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Join Date: May 2010

Posts: 315

DB10 wrote: »

Anyone have any tips how to remember when to use the P button and when to use the C button on the calculator?

I always mix them up...

hi5, im just trying to figure that out too! i think its nPr for arrangements, when the order is important, & its nCr for conbinations when the order doesnt matter..

im a retard, im just after copping! P for Premutations (another word for arrangements) & C for Combinations!:D

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#3 13-06-2010 2:26pm

EuropeanSon

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The only one I ever use is nCr. I just multiply or use factorials for the others.

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#4 13-06-2010 2:42pm

Liveit

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question here aswell
AND means multiply
OR means add
is that right?

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#5 13-06-2010 2:46pm

ajjmk

Registered Users Posts: 338 ✭✭

Join Date: May 2010

Posts: 315

Liveit wrote: »

question here aswell
AND means multiply
OR means add
is that right?

yupyup

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