Problem / game
First name
Mahnoor.kazmi
School
Greenacre Public School
Country
Age
11
The basic strategy for answering this question is trial and error. The result will always be a multiple of 11.
If you try doing 3 621 plus 6 213, you would end up with the result 9 834, which is 11 multiplied by 894. Also, if you, for instance try doing 2 163 plus 1 632, your result will be 3795, which is 11 multiplied by 345.
Therefore, the result will always be a multiple of 11.