explain with steps, please

Given the propositional function P(xy)= "(x-y)>5 where the domain of both x and y is the positive integers smaller than 20. Which one of the following is true? Selected Answer: P(10,3) Correct Answer: P(10,3) estion 15 Question 22 Minimize the following Boolean function: f(x,y,z)= xyz + xyz + xyz + xyz ? Selected Answer: xz*X2 Correct Answer: Evaluation Method Pattern Match Question 23 Which three of the following integers are valid octal numbe [Hint: choose three. Do not guess. Points are deducted for incc Selected Answers: 4666 (octal) 9116 (octal) 5686 (octal Correct Answers 2406 (octal) 4666 (octal) 677 (octal uestion 19 Which one of the following is the minimized function according to the following K-Map? K-Map for fix.y.2) xlyzoo 01 11 10 0 1 1 1 1 11 Selected Answer: fx.y.z) = x.y + x2 + xy Correct Answer: f(x,y,z)=+XZ