Aug 29, 2019· 5: (101) Read and execute permissions. 6: (110) Read and write permissions. 7: (111) Read, write, and execute permissions. Each of the three permissions is represented by one of the bits in the binary equivalent of the decimal number. So 5, which is 101 in binary, means read and execute. 2, which is 010 in binary, would mean the write permission.