The sum of the two binary numbers 1101111 and 1100101 is (11010100) 2.

Note: In binary addition, 1 + 1 = 10 (0 is the sum value and 1 is the carry), 1 + 0 = 1, 0 + 1 = 1 and 0 + 0 = 0.

Calculation:

1 1 1 1 1       (Carry values)

   1 1 0 1 1 1 1 (Binary  number 1)

   0 1 0 0 0       (Sum values )

+1 1 0 0 1 0 1 (Binary number 2)

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1 1 0 1 0 1 0 0 (Answer)

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