Question

Abelardo wants to create several different 7-character screen names. He wants to use arrangements of the first 3 letters of his first name (abe), followed by arrangements of 4 digits in 1984, the year of his birth. How many different screen names can he create in this way?
A) 72
B) 144
C) 288
D)576

Answer 1

please help(:

Answer 2

ummm??? sorry Im confused

Answer 3

please help!(:

Answer 4

Letters Arranged in 3! = 6 ways

Answer 5

numbers Arranged in 4! = 24 ways

Answer 6

6 x 24 = 144 my bad !

Answer 7

where does the seven character screen names come into place?

Answer 8

it doesnt

Answer 9

wait so how did we get to the answer of 72?

Answer 10

the first one was a typo

Answer 11

so its 144?

Answer 12

uhhh, yeah

Answer 13

this is still confusing

Answer 14

look, maybe you should consult with someone else, Since you obviously do not like my answer

Answer 15

the number of permutations of n different objects taken r at a time and is denoted by
nPn
Note that when r = n, nPn= n!