Choose two digits and arrange them to make two double-digit
numbers. Now add your double-digit numbers. Now add your single
digit numbers. Divide your double-digit answer by your single-digit
answer. Try lots of examples. What happens? Can you explain it?
When asked how old she was, the teacher replied: My age in years is not prime but odd and when reversed and added to my age you have a perfect square...
Can you work out how many of each kind of pencil this student bought?
Aba
Age 11 to 14 Challenge Level
In the following sum the letters A, B, C, D, E and F stand for
six distinct digits. Find all the ways of replacing the letters
with digits so that the arithmetic is correct.