http://www.calculator.org/
This is freeware - and is a great product with TONS of features. I actually have the paid version ($11.95) on the pay for reasonably priced good software theory - even though the freeware version was doing me just fine (this was years ago).
This calculator has functions built-in for combinatorics (stats mode) - and also has the ability to do fractional math.
I won't list all the functions, but here's the modes (note that since I have the paid version some of these may not be on the free-ware version).
Decimal
Binary
Octal
Hexadecimal
BaseN
Angle
Time
Finance
Statistics
Matrix
Complex
Roman
Fractions
IP address
Feet/inches
It also has a ton of built-in conversions. The one thing it's missing is a tape type feature for storing a string of results - you have to copy or store results of individual calculations for use further on. And you can't enter a long calculation with lot's of terms in one shot. For that I use my next option:
Next option would be Google's built-in calculator functions
http://www.google.com/intl/en/help/feat ... calculator
There I could enter something like the following:
To find the percentage of flopping a 4 flush, or a made flush, when holding 2 suited cards:
- Code: Select all
100 * ( (11 choose 3)/(50 choose 3) + ((11 choose 2) * (50 - 11)) /(50 choose 3) ) =
Enter that into Google and it'll give you the answer:
100 * (((11 choose 3) / (50 choose 3)) + (((11 choose 2) * (50 - 11)) / (50 choose 3))) = 11.7857143
Excel also has almost any function you need built-in to it - but that starts getting more complicated.
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