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13 in decimal = 1101 in binary.
Lets do the binary addition of the numbers given that is , 1010 and 1101 that can be written as : 1010 +1101 ----------- (1 is carry)1 1 11. ------------
1110 0101 1101 1011 is E5DB
It is 13 5 5.
The binary system has only two digits: 0 and 1 The decimal has ten digits: 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 In binary, numbers are expressed as linear combinations of powers of 2 as in 13 = 1*23 + 1*22 + 0*21 + 1*20 which is written as 1101 In decimal, they are expressed in terms of powers of 10: 1507 = 1*103 + 5*102 + 0*21 + 7*20 All rules of mathematical operations (addition, subtraction, multiplication, division, exponents, etc) apply to both systems in the same way.