1. This is a rule which helps a person identify if a number is divisible by nine.
There is no specific answer to why this is observed but I believe that is just how multiples of nine and three behave!
It is the same with the multiples of three as well!
By the way the 6 digit number could be 513315
thanks, hope that helps!!
5/1? Im not sure if i am right
It’s 3 because you first have to multiply the o and the 3 one your done with that you add 3, so your remaining numbers is 3 cause 3 plus 0 is 3
200 + 4c - 6b
Since selling something is $4, and buying is $6, the equation should look like this.