Melody

Thanks Chris and you are welcome,  BUT

Mellie hasn't said if her program agrees yet.  LOL

Anyway, probability is always fun, especially if you are convinced (rightly or wrongly) that you know what you are doing :))

Actually it is also fun when you understand what you did wrong and  why the correct answer is correct.  

The only way you can get 35 cents is with 1 quarter and 2 nickels     (talk about funny money)

There are 3 ways to pick up a quarter  3C1

and there are 3 ways you can pick up 2 nickels   3C2

So there are  3*3=9 ways to choose 1 quarters and 2 nickels.   That is 9 favourable outcomes :)

Now, there are  9C3=84  ways to choose 3 coins from 9  SO

the prob of picking up 35c is     $${\frac{{\mathtt{9}}}{{\mathtt{84}}}} = {\frac{{\mathtt{3}}}{{\mathtt{28}}}} = {\mathtt{0.107\: \!142\: \!857\: \!142\: \!857\: \!1}}$$

Now does you online program agree this time Mellie?        

Yes well, it was not right - maybe your teacher made a mistake.      

The probability of snow for each of the next three days is $\frac{3}{4}$. What is the probability that it will not snow at all during the next three days? Express your answer as a common fraction.

3/4 *3/4 *3/4  = 27/64    this is the proabability that is DOES snow every day.

1-27/64 = 37/64             this is the proabability that is DOES NOT snow EVERY day.

1/4 is the prob that is DOES NOT snow on any individual day  

1/(4^3) = 1/64               IS the probability that is does not snow AT ALL for the 3 days.

Sorry Mellie but the answer that you have is NOT correct.

Correction, it is just as correct as CPhill answer - it its the question that must be wrong!!!

It is really NOT strawberry jam!   I know,   

BUT I wasn't really going to use it on our wonderful cake.  I was joking, got ya didn't I !   Hahaha. :))

Here's the real knife.

And here I have cut it up :)  there is enough for everyone.

We will start with me (well it is MY cake so I go 2nd, Denzel got the first peice,  then CPhill and Mellie and MG and Zegroes can have some when he gets cut down from the punishment net.  Ok zegroes :))

It looks so delicious - I haven't had coconut cake before.  Yum yum !!!

where did 37/64 come from?   Sounds a bit fishy to me.   

Oh the knife, I forgot, Mellie do you want your cake now?

Your answer was correct Chris.  

 Just Melllie asked the wrong question!  

It's Mellie's fault!     

She has been drinking virtual alcohol you know.    (I am whispering so she won't hear me)     

Hey Mellie, how come you gave CPhill 5 points and not us.  He is the only one who got it wrong.  :/ :/   

What is in that flask you are carrying  ????

Chris, you  have found that probability that it will not snow every day.

Badinage has hound the probability that it will not snow on any day.

So

I am with Badinage on this one :))

Good work Badinage