Hi lizawa,


Thx for explanation.

As you told this may be an enrichment question to test the children sharpness, and may not be a regular question.

Better way to prepare for Maths olympiad.

Great aggellim,


Yesterday, my son also got the same answer from his form teacher.

But, How did you get the answer? :?

BTW, Is the question level appropriate for P4 ???

My son's P4 Maths question for homework:


1. A B + B C = B C B. A, B and C represents single digit numbers. Find out them.

Managed to solve this by iteration - 9 1 + 1 0 = 1 0 1


2. A B + A A = B A C. A, B and C represents single digit numbers. Find out them.

Managed to solve this also by iteration - 9 1 + 9 9 = 1 9 0


3. I stumbled in this question, A B C + A C B = C B A

What is the \"mathematical\" or \"modeling\" way of finding A, B and C. (Don't keep A, B and C all as zeros )