Question

How many three-digit numbers use only the digits 0, 1 and 5?

Answer 1

Please see the pic

i hope it will help

Answer 2

Answer:

3×3× 2= 18

Step-by-step explanation:

i will assume that the number can be such that 1and 5 may each occupy any one of the three possible digits position since,the resulting number must be three digits there cannot be leading zeros and therefore 0 can only occupy any of two digits position (tens and units) , therefore, the possible number of 3 digit number will be 3×3×2=18