Use the complement rule
In a practice set, the probability of answering a question incorrectly is \(\frac{3}{10}\). Find the probability of answering it correctly.
Worked practice: probability
Write the probability as a fraction or decimal, then interpret it if the question asks for a conclusion.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.