Texas Instruments TI-30X - IIS Scientific Calculator Teachers Manual page 74

Permutation (nPr)
Four different people are running in
a race. Use this formula to find how
many different ways they can place
st
nd
1 and 2 .
4 nPr 2 = x
A
AB and BA
count as 2
permutations.
Press
4 H
2 <
© 1999 T I I
EXAS NSTRUMENTS NCORPORATED
B C D
AB AC AD
BA BC BD
CA CB CD
DA DB DC
Display
nPr nCr
---
4 nPr 2
! ¹
DEG
'
12.
DEG
TI-30X ÙS: A Guide For Teachers
H
70