Texas Instruments TI-34 II Explorer Plus User Manual page 90

Permutation (nPr)
Four different people are running
in a race. Use this formula to find
how many different ways they can
place 1st and 2nd.
4 nPr 2 = x
A
AB and BA
count as 2
permutations.
Press
4 H
2 <
© 1999 T I
EXAS NSTRUMENTS
B C D
AB AC AD
BA BC BD
CA CB CD
DA DB DC
Display
nPr nCr !
--- ---
4 nPr
I
NCORPORATED
¹
2
º
12.
TI-34 Û: A Guide for Teachers
H
84