1 + 1 = 10 in binary numbers.
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10
1 plus 1 = 2
In binary 1 + 1 + 1 +1 = 100 This is arrived at since in binary the first digit on the right is the units and the second digit is 2s with the third being 4s. Thus 1 + 1 + 1 +1 = 4 which is made up of 1 four, 0 two and 0 units i.e. 100
In decimal notation: 1+1=2 In binary notation: 1+1=10
1 + 1 = 2Answer:Without specifying a base for the number 1, 1+1=2 in any number system with a base higher than binary. However in binary 1+1 =10.Uh stop being such a smarty pants :(