Melody

Okay Rosala but i just wanted you to put 6P2 into your calculator and get 30.

But you are right you will not do this topic for a long time, so if you don't want to that is fine.  

Thank you for the thumbs up.   

no 6P2=30

$${\left({\frac{{\mathtt{6}}{!}}{({\mathtt{6}}{\mathtt{\,-\,}}{\mathtt{2}}){!}}}\right)} = {\mathtt{30}}$$

My formula for the original question works out exactly the same as Chris's answer.

0! is defined as 1  SO my answer was really just 4!*2!=48 ways.

Try again to get the answer for 6P2 on your calculator.   

4P4*2P2=48

$${\left({\frac{{\mathtt{4}}{!}}{({\mathtt{4}}{\mathtt{\,-\,}}{\mathtt{4}}){!}}}\right)}{\mathtt{\,\times\,}}{\left({\frac{{\mathtt{2}}{!}}{({\mathtt{2}}{\mathtt{\,-\,}}{\mathtt{2}}){!}}}\right)} = {\mathtt{48}}$$

A different question:

6P2 means how many ways can 2 things be chosen from 6 where order counts.

There is a nPr button on your calculator Rosala.  See if you can find it and tell me what this answer is.

On the web2 calc it is nPr(6,2)=

Assuming everyone has equal probablilty of getting a place and there are no ties I am going with you Chris.  Last time this gor both of us into trouble but hopefully we will fare better this time!

$${{\mathtt{91}}}^{\left({\frac{{\mathtt{3}}}{{\mathtt{4}}}}\right)} = {\mathtt{29.463\: \!276\: \!689\: \!625\: \!350\: \!3}}$$

but this is just an approximation.  It is an irrational number so it cannot be written exactly as a fraction or as a decimal.

Hi Rosala,

there is an x! button on all scientific calculators.  It is used  mainly for probability questions.

See if you can find it. 

Question:  If you wanted to know how many different ways seven different books can be ordered on one book shelf this is how you do it

There are seven books that can go in the 1st spot.

Then there are 6 books left for the second spot

Then there are 5 books that can go into the third spot.

so the answer is 7*6*5*4*3*2*1 = 7!

Use your calculator to tell me what the answer is.  

That is interesting reinout.  I guess it has to be something like that.  Thankyou for commenting on this one.

Is this your number puzzle  (is it just +-x and divide and are you sure it is doable)

If this is correct then you do not need to reply- not until you want to answer anyway

6,6,12,35,38,66,104.   Magic number is -912

What has the height got to do with the floor space?

how can you not have had a pie!  I think that

$$P(\overline{\mbox{Zegroes has eaten or at least tasted a pie}})\rightarrow0$$