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A neat way to shuffle stuff like audio tracks or cards is to stick them in an array and swap random numbers. For example let's say we're using 52 cards. The procedure you'd want to follow would be:
...

Thought you might like to know that it's Hero's Formula, not Heron's.

How can I change how many spaces are equivalent to a tab in a RichTextBox? At the moment it's on 8 and I need it on 4.

How can I find it? I can get the current line, but not the character index of the actual insertion point...

Significant figures give scientists information about how precised a measurement is, so they ARE very important. Whilst a mathematician would say that a bottle has 1/3 litres of orange juice in it, a...

How do I find it? I can get the current line but not the character index of the actual insertion point and it's driving me NUTS!

That way we wouldn't have to sift through it every time...

To be honest I can't be arsed with calculating anything. Oh dear.

I concur, C# is by far the better language.

You'd have to do it numerically using something like Simpson's Rule.

How can I enumerate just the CD drives (and their drive letters)?

Comets actually follow elliptical orbits so they don't count.

The inside of car headlights are shaped as parabolas because if you stick a point light source at the focus of the curve, it reflects all the light in the same direction, namely out the front.

How can I determine the next drive letter after C: which doesn't have a drive (such as a CD-ROM) allocated to it?

The first week I was out at a friends birthday party, last week I was looking around Cambridge, next week I'm at home and there are no matches: I might as well wait for the world cup...

Before you start, it's a proof which means you have to start with the information given in the question and arrive at the result, not the other way around.

Well I got the impression he knows how to do it, but as usual he left it up to me to figure it out, which I haven't (primarily because I haven't really tried). So I'd keep trying!

He took a quick look at it and decided it can be done. Unfortunately for you and me, he decided I should be able to do it, and said he wasn't telling me how!

CLM: m1u1 + m2u2 = m1v1 + m2v2 --> v2 = (m1u1 + m2u2 - m1v1) / m2

NIL: v2 - v1 = e(u1 - u2) --> v2 = e(u1 - u2) + v1

So:

e(u1 - u2) + v1 = (m1u1 + m2u2 - m1v1) / m2

Since nothing else can...

I think:


Private Declare Function mciSendString Lib "winmm.dll" (ByVal Command As String, ByVal Return As StringBuilder, ByVal Size As Integer, ByVal Callback As Object) As UInt

'then
...

1.2Kgm-3 = 0.0012KgL-1
0.0012KgL-1 x 0.5L = 0.0006Kg
0.0006Kg / 5x10-26 = 1.2x1022 atoms in one breath.

1.2x1022 * 14 * 60 * 60 * 24 * 365 * 85 = 4.5x1032 atoms in his life.

P = F/A --> F =...

Anyone who uses DotMSN might be able to help with this: I can't access the contact lists. I've tried lots of things, each time nothing happens.

The thing is, if you'd told us that question was from a recent math challenge, the answer almost HAD to be "2003" didn't it. If not, that's a mighty big coincidence.

In that situation:

Kb = [NH4+][OH-] / [NH3]

Aqueous ammonia is only slightly ionized so it's concentration is effectively equal to the original concentration of the solution, i.e. [NH3] = 0.1M....

How can I lock a CD drive so you can't open it?

Isn't that what you pay an accountant to do?

Thanks kleinma again, you're ALWAYS the person who answers my questions so thanks loads!

The only thing I can come up with for that without reading it, is that you've either divided by zero somewhere or factorized something using zero as a factor to trick us ;)

Is there some way I can send messages (locally) between my two applications?

Isn't there some kind of messaging protocol that will let me send messages between the two, say using their process IDs as identifiers?

Instead of using the old windows forms rubbish, can I use HTML in any way to control an application?

Well you did read it too quickly, because under a constant acceleration, v = u + at.

Anyone know anything about CD writing capabilities in VB 6, .NET or any other language for that matter?

<object> <name> = new <object>();

string sMyString = new string();
'creates empty string called sMyString

int iMyInt = new int();
'creates empty integer called sMyInt

string sMyString =...

You can't, no such expansion exists.

Public Function SquareRoot(ByVal Number As Double) As Double
Dim i As Integer
Dim X As Double
X = Number / 2
For i = 1 To 12
X = (X + (Number / X)) / 2
Next i
...

You could (and I would normally) say that:

(x + y + z)3 = Sum(x3) + Sum(x2y) + Sum(xyz)

where Sum() can be considered to be the greek capital sigma. This can be literally translated as:

The...

Ah yeh thanks to whoever gave me those two links.
I now have the object nice and cool, in C# it's:

[DllImport("winmm.dll")]
private static extern uint mciSendString(string CommandString,...

Course I tried! Can you give me some example code as to how I would create the required object?

Well, err, it didn't. Can you give me an example of how you would create the required object?