2-4-11

Function Calculations

Problem

Use this keyboard:

 

Operation

 

 

 

 

mth

abc

cat

2D

 

 

 

 

 

 

 

 

Divide 21 by 6 and 7, and

 

 

Func

 

[iMod] 21 ,{ 6 , 7

determine the remainder

 

 

 

 

})w

of both operations.

 

 

 

 

 

(iMod(21, {6, 7})

 

 

 

 

 

 

 

 

 

 

 

kPermutation (nPr) and Combination (nCr)uTotal Number of Permutations

n!

nPr = –––––

(n r)!

uTotal Number of Combinations

n!

nCr = –––––––

r! (n r)!

Problem

Use this keyboard:

 

Operation

 

 

 

 

mth

abc

cat

2D

 

 

 

 

 

 

 

 

How many different

CALC

 

Func

 

} 10 , 4 w

permutations are possible

 

 

 

 

 

when you have 10 different

 

 

 

 

 

objects and arrange them

 

 

 

 

 

four at a time?

 

 

 

 

 

10P4 = 5040

 

 

 

 

 

 

 

 

 

 

 

How many different

CALC

 

Func

 

{ 10 , 4 w

combinations are possible

 

 

 

 

 

when you have 10 different

 

 

 

 

 

objects and remove four at

 

 

 

 

 

a time?

 

 

 

 

 

10C4 = 210

 

 

 

 

 

 

 

 

 

 

 

20090601