My calculator is not working properly. Only the add and reciprocal buttons work, as well as the numbers 0-9.
Can you work out how to halve any number?
Now the subtract button has started working.
I think this means I can now square any number - can you work out how?
Now, I think I can also calculate the product of any number. How?
Are there any other operations I can do with only add, subtract and reciprocal?
I would love to hear your experiences when solving this problem, in particular with regards to getting involved.