৯টি 9 | Math Problem

Website Discussion
1

Click here to read the complete problem statement.

2

guyzzzzz give some hint on doing this one am too dumb

3

999999999=1000000000-1

now do the rest

4

9×1=9(the sum of all of the digits)
99×12=18
Now you should be able to do this

5

give me how to solve it