Answer:
Method #1:
x + x + 2 + x + 4 = 252
3x + 6 = 252
3x = 246
x = 82, so 82 + 2 = 84 and 82 + 4 = 86.
The scores are 82, 84, and 86.
Method 2:
Median score = 252/3 = 84
Lowest score = 84 - 2 = 82
Highest score = 84 + 2 = 86
The scores are 82, 84, and 86.