Pam scored 78 on a test that had 4 fill-in questions worth 7 points each and 24 multiple choice questions worth 3 points each. She had one fill-in question wrong.How many multiple choice questions did Pam get right?

One fill-in question wrong, so she got

100-7=93 before multiple choice (78).
So she lost 93-78=15 on multiple choice.
How many multiple-choice did she get wrong?

To find the number of multiple choice questions Pam got right, we need to first determine the total number of points she earned from the fill-in questions and then subtract that from her overall score of 78.

Each fill-in question is worth 7 points, and there were a total of 4 fill-in questions. So, the total possible points for fill-in questions is 4 x 7 = <<4*7=28>>28.

However, Pam had one fill-in question wrong, so we need to subtract the points for that question. Each fill-in question is worth 7 points, and since she got one wrong that is 7 - 7 = 0 points.

Therefore, the total number of points Pam earned from the fill-in questions is 28 - 0 = 28 points.

Now, we can subtract the points earned from the fill-in questions (28) from her overall score (78) to determine the points earned from multiple choice questions: 78 - 28 = 50 points.

Since each multiple choice question is worth 3 points, we divide the total points earned from multiple choice questions (50) by the points per question (3) to find the number of multiple choice questions Pam got right: 50 / 3 = <<50/3=16.67>>16.67.

However, since the number of questions must be a whole number, we round down to the nearest whole number.

Therefore, Pam got 16 multiple choice questions right.