Mathbee CBSE Mathbee · CBSE Class 12 Maths
CBSE Class 12 Mathematics 2026 Main Paper 65/5/1 · Q181 Marksconditional_probability

CBSE Class 12 Mathematics 2026 Main Paper 65/5/1 · Question 18 (Probability)

The printed data say 3P(A)=P(B)=3/5 and P(A | B)=2/3. Which listed union value does formal substitution give, and are the data consistent?

✅ Step-by-Step Solution

Final Answer: 2/5
  1. Formal substitution gives P(A∩B)=2/5 and union 1/5+3/5−2/5=2/5. But P(A∩B)>P(A), so no actual events satisfy the printed data.

Master Chapter 13: Probability

Practise interactive questions, flashcards, visual mind maps, and timed board tests for Probability.
📘 Chapter Notes & All Exercises 🚀 Open in Interactive Workspace →
← Previous Question
Perpendicular strips have direction vectors (3,2,λ) and (2,−4,5)…
Next Question →
Assertion: R={(1,1),(1,2),(2,1),(2,2),(3,3)} is an equivalence…

All Questions in CBSE Class 12 Mathematics 2026 Main Paper 65/5/1

Q1Q2Q3Q4Q5Q6Q7Q8Q9Q10Q11Q12Q13Q14Q15Q16Q17Q18Q19Q20Q21Q22Q23Q24Q25Q26Q27Q28Q29Q30Q31Q32Q33Q34Q35Q36Q37Q38

Related Questions in Probability

Class 12 Probability · Mcq Single Correct
Given P(A)=4/5 and P(A∩B)=7/10, find P(B|A).
Class 12 Probability · Mcq Single Correct
Five independent fair coins are tossed. Find the probability of at least one head.
Class 12 Probability · Mcq Single Correct
Given P(A|B)=0.3, P(A)=0.4, P(B)=0.8, find P(B|A).
Class 12 Probability · Mcq Single Correct
Two independent fair dice have sum 9. Find the conditional probability that at least one die…
Class 12 Probability · Mcq Single Correct
Choose an ordered pair (a,b) uniformly with distinct a,b from {1,2,3,4,5}. Find P(a/b is an…
Class 12 Probability · Mcq Single Correct
Given P(A)=0.4, P(B)=0.3 and P(A∪B)=0.5, find P(B′∩A).