## anonymous one year ago 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

1. anonymous

alot

2. anonymous

3. anonymous

i know

4. misty1212

HI!!

5. misty1212

don't think too hard for this one

6. misty1212

how many 4 digit numbers are there?

7. anonymous

B && C have 4 digit numbers

8. anonymous

my guess could be c but I'm not sure

9. misty1212

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

10. misty1212

ok lets go slow

11. misty1212

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

12. anonymous

i have other questions do you know the aneswer

13. misty1212

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

14. misty1212

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

15. anonymous

i get it not thanks