How many possibilities are there if you are creating a 4-digit password using the digits 0 through 9? You may repeat numbers.
A.40
B.6,561
C.5,040
D.10,000

Question

How many possibilities are there if you are creating a 4-digit password using the digits 0 through 9? You may repeat numbers.
A.40
B.6,561
C.5,040
D.10,000

anonymous · Answer

alot

anonymous · Answer

not an answer

anonymous · Answer

i know

misty1212 · Answer

HI!!

misty1212 · Answer

don't think too hard for this one

misty1212 · Answer

how many 4 digit numbers are there?

anonymous · Answer

B && C have 4 digit numbers

anonymous · Answer

my guess could be c but I'm not sure

misty1212 · Answer

lol i was asking "how many four digit numbers are there" not 'how many answers have four digits in them?"

misty1212 · Answer

ok lets go slow

misty1212 · Answer

you have four digits to fill 
ten choices for each digit
first digit 0 through 9 (ten choices)
second digit another ten choices etc

anonymous · Answer

i have other questions do you know the aneswer

misty1212 · Answer

by the counting principle, the number of choices all together is the product
in other words, total number of choices is $$10\times 10\times 10\times 10=10^4$$

misty1212 · Answer

which is another way of saying there are $10,000$ four digit numbers

anonymous · Answer

i get it not thanks