Question

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state in which license plates have one numeral followed by three letters followed by three numerals? (Round your answer to one decimal place.)

Answer 1

yes

Answer 2

i have no clue lol

Answer 3

_ _ _ _ _ _ _
so 7 slots right - how many letters in the alphabet ?

Answer 4

right

Answer 5

26

Answer 6

10+26+26+26+10+10+10
does this make sense

Answer 7

this is all the possible license plates with this combination

Answer 8

right but we are trying to find the probability of getting one with a repeated letter

Answer 9

1 - P(all different) = 1 - 10*26*25*24*9*8*7/(26^3*10^4)

= 0.5527 -> 0.6
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Answer 10

does that make sense

Answer 11

i believe so