Question

a key code must contain 4 letters and 3 numbers. the letter maybe any letter of the alphabet the number should be any number from 0 to 9.how many different keycode combunations are there

Answer 1

@DaBest21

Answer 2

@DaBest21

Answer 3

you need to find 26P4 for the letters
and 10P3 for the numbers

Answer 4

Well, If the numbers all go first it will be 6^3*26^4
Now if they are all mixed up you are testing me. Probability is a bit of a joke on this forum.
Now let me see. there are 7 items in the code.
I'm going for 7C3*6^3*26^4 =

Answer 5

- these are the number of permutations

Answer 6

one thing- i'm assuming that you cant have duplicate letters and numbers

Answer 7

do 1/26*1/25*1/24*1/23*1/10*1/9*1/8 cross multiply that so do 1*1*1*1*1*1*1=1 and what is 26*25*24*23*10*9*8 @thisotherliz

Answer 8

if repetitions are allowed
then for the letters there are 26^4 permutations
for the numbers its 10^3

Answer 9

so total possible combinations = 26^4 * 10^3