Question

Question 1: To enter their home, the Cepeda family types in a 4 digit

code. How many codes are possible? *
40
10
1,000
10,000

Answer 1

So the first digit could be 0-9.

second is the same 0-9

And the 3rd 0-9 and lastly the 4th 0-9

There is a
`(1)/(10) *(1)/(10) *(1)/(10)* (1)/(10)` chance that they will get it right by guessing.

So that means a
`(1)/(10000)` chance that they will get it right.

So their are 10000 possible codes.