Is this correct? Variations

How do you tell if a number is divisible by 5?

How many digits can you pick from for the 1st digit?
How many digits can you pick from for the 2nd digit?
How many digits can you pick from for the 3rd digit?
How many digits can you pick from for the 4th digit?
 
How do you tell if a number is divisible by 5?

How many digits can you pick from for the 1st digit?
How many digits can you pick from for the 2nd digit?
How many digits can you pick from for the 3rd digit?
How many digits can you pick from for the 4th digit?
it has to end with 0 or 5
1st digit 5 possibilities
2nd digit 6
3rd digit 6
4th digit 2
i think i showed that
 
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