Im reading a new york times article. Here is the link if anyone is interested:
and i see this problem:
Choose a four-digit number, with each digit different. Scramble the digits to create a new number. (For instance, if your first number is $2,357$, your second number might be $7,325$.) Subtract the smaller number from the larger, and add together the digits of the resulting number. If your sum is one digit, go no further. If your sum is a two-digit number, then add the two digits together.
I am trying to see how the number would be $9$ but i dont quite understand the problem.
Lets use the number in the problem $2,357$ and follow the steps:
- Choose a four digit number: $2,357$
- Scramble: $7,325$
What do they mean subtract the smaller number from the larger.
I interpreted it as: $7-2=5$ and then add $5+3+5=13$ that is clearly not $9$
then i thought subtract the digits of $7,325, 2,357$. so $7-2=5$,$3-3=0$, $2-5=-3$ and $5-7=-2$ but when you add the result up you get $0$
So can anyone help me understand what they mean in the bold parts.
ANSWER to question: Your number is $9$.