1. 
If the mean of numbers 28, x, 42, 78 and 104 is 62, then what is the mean of 128, 255, 511, 1023 and x?



2. 
If the sum of the interior angles of a regular polygon measures up to 1440 degrees, how many sides does the polygon have?



3. 
Set A contains all the even numbers between 2 and 50 inclusive. Set B contains all the even numbers between 102 and 150 inclusive. What is the difference between the sum of elements of set B and that of set A?



4. 
The average of 5 quantities is 6. The average of 3 of them is 8. What is the average of the remaining two numbers?



5. 
A cube of side 5cm is painted on all its side. If it is sliced into 1 cubic centimer cubes, how many 1 cubic centimeter cubes will have exactly one of their sides painted?




