Discussion
In the two-digit number x, both the sum and the difference of its digits is 4. What is the value of x?
*This question is included in Nova Math - Problem Set F: Number Theory, question #7
| (A) | 13 |
| (B) | ... |
| (C) | ... |
| (D) | ... |
| (E) | ... |
| (F) | ... |
The solution is
Posted: 06/02/2013 12:20
Explanation...
Posted: 06/06/2013 23:20
Did you see the explanation? There is an explanation for every question, you know. After you submit the answer, choose Show Solution. I can't explain this better than the Explanation in the app's Show Solution.