answer:-1
reason :
Once the numbers add up, once they decrease
what does it mean?
it mean that:
The first and second numbers we add are one, they become two
The second and third numbers are one and two. We subtract the second number from the third number, it becomes negative one and ...
1+1=2
1-2=-1
2+(-1)=1
-1-(+1)=-2
1+(-2)=-1
so we should - them
-2-(-1)=-1
Taking into account the repeated ones it would be 7! what is 7*6*5*4*3*2*1
A:the mean and that’s all I know ahahahahahahahhbbahhhh
