Over Kill Questions

[Pro_LiZzy]

Alright so I am going in high school first grade and professor from Informatics (computing) asked me do I want to participate in competition and of course I said yes, he gave me questions from 2011, 2012,203 and 2014, when I looked at all questions I was stunned and felt stupid since I didn't know answers on more than half of them. My school is not tech school or anything like so, its just subject that covers basic things. Questions from previous years are something I never learned about in school or home. Here are few questions and I'd like to know if you could solve them without Googling anything and using calculator or anything like so.

 

Write the number 128.2187510 in binary and octal.

 

Refer a series of numbers

  1012, 224, x6, 248, 2510, Y16

 

How much is 3 digits of the number in octal representation 5BEEB65A16?

 

 

You are given the variables a, b, c and d. Determine the value of x and y logical

After executing the set command.

a = 10; b = 20; c = 30; d = 40;

x = a <b or c> b and d <a;

y = a <b or c> b and d = a OR b = c;

 

 

 

Write function using only the operations of conjunction and negation:

  Y =

[beebskadoo]

DO THEM YOURSELF. IT'S WHY YOU ARE IN SCHOOL!!!

[werto165]

how the hell do they expect you to do that in your head? 128.2187510 it's something ridiculous in binary even more so in base 8

[Pro_LiZzy]

how the hell do they expect you to do that in your head? 128.2187510 it's something ridiculous in binary even more so in base 8

They said no phone, calculator or anything like so, only chemical and paper.