Beautiful mathematics. Two 18 year old students gave eight different proofs of one result then generalised it from the 3 by 1 case to the n by 1 case and proved the general result.
In these addition, subtraction, multiplication and division games, you'll need to think strategically to get closest to the target.
In these addition and subtraction games, you'll need to think strategically to get closest to the target.
Play this game and see if you can figure out the computer's chosen number.
A game in which players take it in turns to choose a number. Can you block your opponent?
To avoid losing think of another very well known game where the patterns of play are similar.
