First you will asked to choose a number base.
Choose any number base from three to ten. You can enter your base as 3 or three, 4 or four,
... , 10 or ten,
Make up a number of three or more digits in
your chosen base. Recall in base n the
digits are 0, 1, 2, 3, 4, 5, ..., n-1.
Using these same digits, create another number of
the same length. For example, using
base six, if you chose the numer 5413, you would use
these same digits to create another four digit
number, say 1534.
Subtract the smaller of the two numbers from the
larger. In the above
example, you would calculate 5413 - 1534 to get
From your answer in Task 4, discard any one of the
non-zero digits. From 3435 you might
remove the 5 to obtain 343.
At a prompt, you will be asked to enter the number
that remains after you complete Task 5. Here you would enter
As soon as you enter your result (343), I will tell you
the digit you discarded.
When you are ready, .
If my answer seems wrong, you had better check your
arithmetic and try again.