Melody

Don't worry Alan most likely has the same short falls - Camelot is doomed!

Thanks for the explanation.  

Hi zegroes, first, why do you think this person wanted the answer in litres?

I suppose we often 'guess' what people want so I can't fault you for this.

If you are going to change to litres, why wouldn't you get the total of the two first

i.e.  11gal 3 qu=11.75gal = 3.785412*11.75=44.48L (2dp) U.S. units

I used this site for the unit convertion 

That wasn't the point Alan.

The point is that the card has already been chosen.  It has 1 red side. therefore

P(2whites sides)=p(2black sides )=p(2purple sides)=0

p(2red sides)=P(one red and one white)=0.5

How can you say differently?????

Please try and explain to me what is wrong with my logic. (or lack thereof)

Okay Alan 

I only just read your answer properly - Now I have something to think about - thank you.

Yea I get it now I think.

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Ok Ok I've changed my mind - I'm wrong - You're right - who is to be Sir Lancelot, head knight of camelot?

Is it Alan? Is it Bertie?  Let the jousting begin!

Monday 16/6/14

Thank you NinjaDevo

I'm sticking to my answer too.  I believe that is like saying that the chance of a child being a boy is 50%.  If you already have two boys and there is another baby on the way what is the chance of ending up with 3 boys.  it is not 0.5³   It is 0.5

Well the card is chosen.  It is definitly not the fully white one.  that is no longer a possibility so the probability that the other side will be white is 50%. the probablity that it is red is 50%.

I know Alan and Bertie are superior mathematicians but I am STILL sticking with my answer!

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NO I'M NOT - I'm Lady Guinevere - My mind can change as doth the vector of the breeze!

The maker of the glue shall be banished from the land of camelot for it has become Unstuck!

Thank you Heureka.

I got that. Back to kindergarten for me!

This one was confusing me a bit.

ln (x)² = 2ln(x)

but with 2ln(x) x must be >0

and with ln (x)²  x is just in the set of reals.

How does that work???

Are you paying off a loan or is the money sitting in the bank earning interest?  Is interest paid/given monthy or yearly or what.

Now Paulina - you have to respond by hitting the post answer button.

1) ln (4-x) + ln(2) = 2 ln(x)

$$\begin{array}{rll}
ln(2(4-x))&=&ln(x^2)\\\\
8-2x&=&x^2\\\\
x^2+2x-8&=&0\\\\
(x+4)(x-2)&=&0\\\\
x=-4\qquad &or& \qquad x=2
\end{array}$$

now I am confused as well.

You cannot have  the ln of a negative number so I guess x=2