How do you say the followings in Hungarian: a, it's 4 o'clock (4:00) b, it's a quarter past 4 (4:15) c, it's half past 4 (4:30) d, it's a quarter to 5 (4:45)?

The answers are: a, 4 óra van; b, negyed 5 van; c, fél 5 van; d, háromnegyed 5 van. Basically while in English in the first 30 minutes we say how much time passed since the last hour, in Hungarian we say how much is already passed in the next hour. So "negyed 5 van" literally translated as "it's quarter 5" and "háromnegyed 5 van" is "it's three quarters 5". It might sound weird at first, but trust me, you'll get used to it. :)

Find the Greatest Common Factor of the following number pair: 20 and 56.

The answer is 4. The greatest common factor is the highest number that divides exactly into two or more numbers. When we find all the factors of two or more numbers and some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor. So in this case 1, 2, 4 are common factors of both 20 and 56 and 4 is the greatest.

What is 2¹⁰?

It is 1024 because you have to multiply 2, ten times to itself. So 2¹⁰=2x2x2x2x2x2x2x2x2x2. You solve this easily by doing it one by one. :)