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Cards (12)
Experiment
- in any given situation results are called
outcomes.
Event
- a desired outcome
Sample space
- refers to the set of all possible
outcomes
Factorial
- The result of multiplying a sequence of descending
natural numbers
from n to
1.
Permutation
- refers to all possible
arrangements
of a collection of things where the
order
is
important
P
(n,r) =
n!
The number of
permutations
of
n
distinct objects taken r at a time is given by: n!/(
n-r
)!
The number of permutations of n distinct objects of which
n1
are similar, n2 are similar, ..., nk are similar is given by: n!/
n1!
,
n2!
, ...,
nk!
The number of
permutations
of n objects arranged in a circle is given by:
(n-1)
!
The number of
permutations
of n objects in a
key
ring
and is given by:
(n-1)
!
/
2
Combination
- refers to all possible arrangements in which the
order
of the objects is
not important
or taken into consideration
C
=
n
!/
r
! (
n-r
)!
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