ProbabilityPYQ July 21Question 3398 of 170
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The value of K\displaystyle K for the probability density function of a variable X\displaystyle X is equal to: | X | P(x) ||---|---|| 0 | 5k\displaystyle 5k || 1 | 3k\displaystyle 3k || 2 | 4k\displaystyle 4k || 3 | 6k\displaystyle 6k || 4 | 7k\displaystyle 7k || 5 | 9k\displaystyle 9k || 6 | 11k\displaystyle 11k |

Options

A139\displaystyle \frac{1}{39}
B140\displaystyle \frac{1}{40}
C149\displaystyle \frac{1}{49}
D145\displaystyle \frac{1}{45}
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Correct Answer

Option c149\displaystyle \frac{1}{49}

All Options:

  • A139\displaystyle \frac{1}{39}
  • B140\displaystyle \frac{1}{40}
  • C149\displaystyle \frac{1}{49}
  • D145\displaystyle \frac{1}{45}

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 Syllabus

Exam 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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