Question detail

method check: a bag has 3 blue counters and 7 red counters. Find the probability of choosing a blue counter.

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Solving equations and inequalities

Question

A. 0.3
B. 3.3
C. -2.7
D. 0.6

Answer

The correct answer is 0.3.

Explanation

The distractors change the result or the form of the answer. The canonical solution reaches 0.3, so 0.3 is the only option consistent with the working.

Common mistake

Quadratic equations common mistake 1

Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Solve quadratic equations algebraically by factorising, including rearranged equations where tier-appropriate..

Show the method first, then give the final answer in the required form. Apply this directly to Quadratic equations.

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