Multiple choice general knowledge science & technology

Which of the following gives permission to "Others" to make changes(write allowed) in "abc.txt" file

  1. chmod 751 abc.txt

  2. chmod 757 abc.txt

  3. chmod 550 abc.txt

  4. chmod 000 abc.txt
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

chmod 757 sets permissions as rwxr-xrwx (binary: 111101111). The last 3 bits (rwx = 7) grant read, write, and execute to 'others'. Only 757 allows 'others' to write.

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