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HP 46 - Percentage Problems

HP 46
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Solution:
The
permutations
of
6
things
(n)
taken
6
at a
time
(k)
is
solved
using
the
formula:
p"
_
n!
_
_6!
k
(n-k)!
(6-6)!
)
.
N
600
!
Press:
6
-
6|t
@
6400
'
(@)
sl
<
o
<
o
720000
Almost
two
years!
Percentage
Problems
To
find
the
percentage
of
a
number,
enter
the
base
number
and
press
ENTER?®.
Then
key
in
the
percent
rate
and
press
.
A.
Find
25%
of
78
Press:
(ciea)
CLEAR
7800
+
N
"
25400
%
78|
11|
251
%
||
|}
£
C:]
T
19.50
o
A
listing
of
the
stack
shows
that
the base
number
and
the
percentage
are
in
Y
and
X.
000
SO
.
-
LIST
Press:
.
0.00
cté
78.00
-S9O
19650
«So
STK
19

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