(2)
5
3
3
3
5
24
Operation
Display
<Example 1>
(1) When three cards are selected from five cards numbered
1 to 5 and placed in a row, how many possible orderings of
the cards are there?
(2) When three cards are selected from five cards numbered
1 to 5, how many ways of selecting the cards are possible?
5
P
3
= 5 x 4 x 3
Let the number of ways of selecting the cards be
C
.
There are 3! possible orderings of the cards, and thus
when ordered in a row
Therefore
C
is
(1)
5
3
Permutations, Combinations
*This is written as
5
C
3
.
C
x 3! =
5
P
3
C
=
5
P
3
÷ 3!
Summary of Contents for WriteView EL-W531X
Page 1: ...SCIENTIFIC CALCULATOR OPERATION GUIDE SCIENTIFIC CALCULATOR OPERATION GUIDE Write View ...
Page 38: ...37 Example Operation Absolute Value Returns an absolute value Display 3 4 ...
Page 54: ...53 3 100 10 20 3000 0 x x dx Integration calculation x dx ...
Page 70: ...69 a b r ...
Page 75: ... SHARP CORP SEP 13 ...
