1.In how many ways can you fill three different positions by choosing from 15 different people?
2.how many different permutations can you make with letters in the word SEVENTEEN?
3.A teacher has set of 12 problems to use on a math test.The teacher makes different versions of the exams by putting 10 questions on each exam.How many different exams can the teacher make?
2006-09-05 15:16:33 · 4 answers · asked by Anonymous in Education & Reference ➔ Homework Help
1. 15 x 14 x 13 = 2730
2. 9! / (4!2!1!1!1!) = 7560
3. 12C10 = 12!/(10!2!) = 66
2006-09-05 15:24:13 · answer #1 · answered by q_midori 4 · 0⤊ 0⤋
1. 45
2. 63
3. 144
2006-09-05 22:18:59 · answer #2 · answered by Evil Homer 4 · 0⤊ 1⤋
1.45
2.81
3.120
2006-09-05 22:19:23 · answer #3 · answered by Krissi 4 · 0⤊ 1⤋
2.ENE
ENS
ens
ENT
ESE
EST
Este
ESV
ETV
Eve
eve
even
evens
event
events
eves
nee
nene
nenes
Nenets
nest
NET
net
nets
NNE
NSE
NTS
See
see
seen
sen
sene
sennet
sent
sente
set
seven
seventeen
Steen
steeve
tee
teen
teens
Tees
tees
ten
TENS
tens
tense
TVs
vee
vees
venene
venenes
vent
vents
vest
vestee
vet
vets
2006-09-05 22:20:34 · answer #4 · answered by Anonymous · 0⤊ 1⤋