Three-digit numbers

How many are all three-digit numbers that are made up of digits 0,2,5,7 and are divisible by 9 if the digits can be repeated?

Correct answer:

n =  7

Step-by-step explanation:

s1=2+7+0=9 s2=2+2+5=9  s1 mod9=0 s2 mod9=0  270,720,207,702,225,252,522  n=4+3=7



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Would you like to compute the count of combinations?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions: