The numbers 1,2,...,n are written on the board. Every minute, I erase two numbers a and b, and replace them with a+b+ab. Clearly, after n-1 minutes there is only one number left on the board. Does the result depend on the order? For which n can I make the resulting number be odd?

answer: none of these answers are correct only the second half is

step-by-step explanation:

you would need to also lose 1 point for each of the other outcomes for it to be fair.

step-by-step explanation:

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

a

step-by-step explanation: