Solution

26851

Problem / game
Always a multiple? Back to problem
First name
Michelle & Cathy
School
Mount Waverley P.S
Country
Australia
Age
11

1. 21 reverse 12
21+12= 33
33= a multiple of 11.
2.25 reverse 52
25+52=77
77= a multiple of 11.
3.18 reverse 81
18+81=99
99= multiple of 11.
4.31 reverse 13
31+13=44
44= a multiple of 11.

Answer: Yes, it will always be a multiple (of 11)