For a probability distribution, probability is given by, $P(X_j) = \frac{k}{x_j^2}$, $x_j = 1, 2, \dots, 9$. The value of $k$ is
Options
A$55$
B$9$
C$45$
D$81$
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ProbabilityPYQ Dec. 21Question 2837 of 240
All Questions Correct Answer
✅ Option c — $45$
All Options:
- A$55$
- B$9$
- C$45$
- D$81$
About This Chapter: Probability
Paper
Paper 3: Quantitative Aptitude
Weightage
5-7 Marks
Key Topics
Probability Operations, Expected Value
A logic-heavy chapter dealing with random experiments, events (mutually exclusive, exhaustive), set theory probability, conditional probability, and Bayes' Theorem. It forms the basis for Theoretical Distributions.
View Official ICAI SyllabusExam Strategy Tip
Always draw a quick Venn Diagram or tree when faced with 'At least one' or 'Only A but not B' wording. It saves you from double-counting.
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