Home › CBSE Class 12 (Commerce) › Mathematics › Probability › If P(B) = 9/13 and P(A ∩ B) = 4/13, what is P(A|…
If P(B) = 9/13 and P(A ∩ B) = 4/13, what is P(A|B)?
A4/13
B9/13
C4/9
D13/36
Answer & Solution
Correct answer: C. 4/9
P(A|B) = (4/13) / (9/13) = 4/9, since the common denominator 13 cancels.
Related questions
If P(A) = 0.6 and P(B) = 0.7, the smallest possible P(A and B) isA bag has 5 red, 3 green and 2 yellow marbles. P(red or yellow) isTwo dice are thrown. P(first die is 6 and sum is at least 11) isA card is drawn from ten cards numbered 1 to 10. P(2, 4, 6 or 8) isTwo fair dice are thrown. P(sum greater than 11) isTwo fair coins are tossed. P(exactly one head) isA fair die is rolled. P(a number less than 3) isIn P(A) + P(B), the sample points of A and B together are counted