Problem 3 and 4

Please give a detailed answer

Evaluate each of these Java bit-operator expressions. Express your answers as a decimal numbers. (We know that you could just write a small Java program to get your Answers, but remember that you won't be able to use a computer on a quiz or an exam!) Assume integers. (a) 29 & 11 (b) 7| 17 Using a umask of 64 and a default permission value of 644, determine the initial file permission bits, expressed as a three-digit octal value, that would be assigned to a newly-created Linux file