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Probability

This section explains commands and functions that you can input after performing the operation: – [Probability].

%

Inputting a value followed by % command causes the input value to become a percent.


Example 1: 150 × 20% = 30

  • 15020
    – [Probability] > [%]

Example 2: Calculate what percentage of 880 is 660. (75%)

  • 660880
    – [Probability] > [%]

Example 3: Discount 3500 by 25%. (2625)

  • 3500350025
    – [Probability] > [%]

Factorial(!)

This function obtains the factorials of a value that is zero or a positive integer.


Example: (5 + 3)! = 40320

  • 53
    – [Probability] > [Factorial(!)]

Permutation(P), Combination(C)

Permutation (nPr) and combination (nCr) functions.


Example: To determine the number of permutations and combinations possible when selecting four people from a group of 10


Permutations:

  • 10
    – [Probability] > [Permutation(P)]
    4

Combinations:

  • 10
    – [Probability] > [Combination(C)]
    4

Random Number

This function generates a pseudo random number in the range of 0.000 to 0.999. The result is displayed as a fraction when MathI/MathO is selected for Input/Output on the SETTINGS menu.


Example: To obtain random three-digit integers

  • 1000
    – [Probability] > [Random Number]
  • (The result differs with each execution.)

Random Integer

This function generates a pseudo random integer between a specified start value and end value.


Example: To generate random integers in the range of 1 to 6

  • – [Probability] > [Random Integer]
    1(,)6
  • (The result differs with each execution.)
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