"Mistakes.  Plural.  The divisor is 6, not 4, and you're also looking for the added product rather than the total product.  If it's ordered 5-3-2, that's a marginal product of 5.  If it's ordered 5-2-3, that's a marginal product of 5.  If it's ordered 2-5-3, the product starts at 2, and goes to 10, which is a marginal product of 8.  3-5-2 goes from 3 to 15, marginal product 12.  2-3-5 and 3-2-5 go from 6 to 30, marginal product 24 repeated twice."  Asmodia has been writing down these numbers, thank you, she is not trying to keep it all in her head without a Fox's Cunning.  "5 + 5 + 8 + 12 + 24 + 24 = 78, divided by 6... 13."

She quickly checks the other two numbers to make sure she's got it right.

2:  2 + 2 + 3 + 5 + 15 + 15 = 42 / 6 = 7
3:  3 + 3 + 4 + 10 + 20 + 20 = 60 / 6 = 10

13 + 7 + 10 = 30.  Okay, she didn't just make a (tiny bit, unimportantly, bigger) fool of herself.

"Mistakes.  Plural.  The divisor is 6, not 4, and you're also summing the marginal production rather than the total production.  If it's ordered 5-3-2, that's a marginal production of 5.  If it's ordered 5-2-3, that's a marginal production of 5.  If it's ordered 2-5-3, the product starts at 2, and goes to 10, which is a marginal production of 8.  3-5-2 goes from 3 to 15, marginal production 12.  2-3-5 and 3-2-5 go from 6 to 30, marginal production 24 repeated twice."  Asmodia has been writing down these numbers, thank you, she is not trying to keep it all in her head without a Fox's Cunning.  "5 + 5 + 8 + 12 + 24 + 24 = 78, divided by 6... 13."

She quickly checks the other two numbers to make sure she's got it right.

2:  2 + 2 + 3 + 5 + 15 + 15 = 42 / 6 = 7
3:  3 + 3 + 4 + 10 + 20 + 20 = 60 / 6 = 10

13 + 7 + 10 = 30.  Okay, she didn't just make a (tiny bit, unimportantly, bigger) fool of herself.

"Mistakes.  Plural.  The divisor is 6, not 4, and you're supposed to sum over the marginal productions rather than the total productions.  If it's ordered 5-3-2, that's a marginal production of 5.  If it's ordered 5-2-3, that's a marginal production of 5.  If it's ordered 2-5-3, the product starts at 2, and goes to 10, which is a marginal production of 8.  3-5-2 goes from 3 to 15, marginal production 12.  2-3-5 and 3-2-5 go from 6 to 30, marginal production 24 repeated twice."  Asmodia has been writing down these numbers, thank you, she is not trying to keep it all in her head without a Fox's Cunning.  "5 + 5 + 8 + 12 + 24 + 24 = 78, divided by 6... 13."

She quickly checks the other two numbers to make sure she's got it right.

2:  2 + 2 + 3 + 5 + 15 + 15 = 42 / 6 = 7
3:  3 + 3 + 4 + 10 + 20 + 20 = 60 / 6 = 10

13 + 7 + 10 = 30.  Okay, she didn't just make a (tiny bit, unimportantly, bigger) fool of herself.