Answers to 2004

Problem 01:

Just an extended fraction: $\dfrac{53}{22}$

Problem 02: 3
Problem 03: 2
Problem 04: 1/25
Problem 05: 4pi
Problem 06: 8/3
Problem 07: 30°
Problem 08: 125
Problem 09: 5

Problem 10: 10
Problem 11: 25% decrease
Problem 12: 1/2
Problem 13: 630
Problem 14: 6
Problem 15: 25/4
Problem 16: 6
Problem 17: 35/36
Problem 18: 225
Problem 19: 4008

Problem 20: 5
Problem 21: 6√3-3π
Problem 22: -4/5
Problem 23: 33/4
Problem 24: 0 or 4/3
Problem 25: 46
Problem 26: $\sqrt[3]{2}$
Problem 27: 139
Problem 28: 240
Problem 29: 35

Problem 30: (x,y) = (66, 55)
Problem 31: 3/4
Problem 32: 704
Problem 33: 1003
Problem 34: 1/6
Problem 35: 41
Problem 36: 9/8
Problem 37: 8√3
Problem 38: 42
Problem 39: 76

Problem 40: 1/20
Problem 41:

$(x,y)=\dfrac{3}{2},\dfrac{1}{2}$