dMdMAT Exam Prep
Subject Module

General Academic

What this question type is

A mixed multiple-choice reasoning test — quantitative word problems, logical deductions, data interpretation, and applied "transfer" reasoning. Each question has one prompt and four options.

How to solve it

Read the category label; it hints at the skill. For quantitative items, set up the arithmetic step by step and beware of off-by-one traps. For logical items, apply the rule strictly — valid conclusions only follow from what's actually stated. For data/transfer items, identify the exact relationship being asked about (which model? proportional or inversely proportional?) before calculating.

Worked example

"If you have an apple, you cannot have a banana. You have a banana." By contrapositive, you therefore do not have an apple — that's the only conclusion that must be true.

Try it yourself

0 of 4 solved
Quantitative Reasoning
An algorithm processes samples in batches. The first batch takes 6 ms, and each subsequent batch takes 3 ms longer than the previous one. How long will the third batch take?

Why

Batch 1 = 6 ms, batch 2 = 6 + 3 = 9 ms, batch 3 = 9 + 3 = 12 ms. So 12 ms.

Logical Reasoning
If you have an apple, you cannot have a banana. You have a banana. Which of the following is logically valid?

Why

The rule says apple → not banana. You have a banana, so by contrapositive you cannot have an apple. Grapes were never mentioned, so nothing follows about them.

Data Interpretation
A study monitors battery life over 5 hours. Model A drops 15% per hour; Model B drops 10% per hour. After 3 hours, what is Model A's remaining percentage (starting at 100%)?

Why

The question asks about Model A, which drops 15% per hour. Over 3 hours that's 45%. 100 − 45 = 55%. Model B's rate is a distraction.

Academic Reasoning
The rate of heat transfer through a material is inversely proportional to its thickness. A wall 6 cm thick transfers 60 J/s. If you double the thickness to 12 cm, what is the new rate?

Why

Inverse proportionality means doubling the thickness halves the rate: 60 ÷ 2 = 30 J/s.