some good answers there, but not the one I was looking for.

hint: computer

another hint: 1 + 1 = 10

when you are boing boolean algebra 1+1=1

very close ...

I've probably given it away now ...

1 + 1 + 1 + 1 = 100

I have been suggesting for years that those who, for some strange reason, feel compelled to regard any posting number divisible by 100 as worthy of a tribal cry of "SNIPE",  to convert to binary counting. Imagine the  joy for them at post 4, 8, 16 etc.

Ah yes, when using binary language. Good one.

another hint: 1 + 1 = 10

My son has a favourite Tshirt - it says:

"There are 10 types of people in this world.

Those that understand binary

and those that don't."

when both of the 1's are opposites and capable of reproducting

when is 1 + 1 not equal 2?

when they make a pair ?

ps.. I know reproducting isn't a word .I made a mistake 

nor do I , i saw it on google where i saw my answer still don't get it

draw  1+1 and put the equals top and bottom over of the number ones..

it looks like a window