1+1=?

spam+spam=
a) spamspam
b) ssppaamm
c) spaspamm?

@ManosMiliotis said in #1:
> 1+1=?
Depends on whether the plus sign signifies addition or concatenation. If it is addition, then 1+1 is 2. If it is concatenation, then 1+1 = 11.

1+1=10 dual system
10+1=11
11+1=100
and so on.

1+1=1*2=2-0=2...... sometimes

Of course it's 2.

@e4e5f4exf4nicht said in #6:
> 1+1=10 dual system
> 10+1=11
> 11+1=100
> and so on.
Its binary.

You can count with the fingers of one hand until
11111. How much is that in binary system. You should skip the number 100 or keep your hand under the table. Do you know why?