Conditional Probability and Multiplication Theorem

IMPORTANT

Conditional Probability and Multiplication Theorem: Overview

This topic covers concepts, such as Properties of Conditional Probability, Conditional Probability, and Multiplication Rule of Probability.

Important Questions on Conditional Probability and Multiplication Theorem

HARD
IMPORTANT

A signal which can be green or red with probability   4 5  and   1 5  respectively, is received by station A and then transmitted to station B. The probability of each station receiving the signal correctly is   3 4 .  If the signal received at station B is green, then the probability that the original signal was green is:

MEDIUM
IMPORTANT

Four persons draw 4 cards from an ordinary pack. If the chance that a card is of each suit is p1 and the chance that no two cards are of equal value is p2 then the value of p1p2=

EASY
IMPORTANT

PA=25,PB=310,PAB=15 then PA'B' PB'A'=____

MEDIUM
IMPORTANT

A and B try to hit a target. The probability that A hits the target is 710 and the probability that B hits the target is 410. If these two events are independent, the probability that B hits the target, given that the target is hit, is

HARD
IMPORTANT

If two events A and B are such that P(Ac)=0.3, P(B)=0.4 and P(ABc)=0.5, then PBABc is

MEDIUM
IMPORTANT

A bag contains 5 white and 3 black balls. Two balls are drawn at random without replacement. Determine the probability of getting both the balls black.

EASY
IMPORTANT

Three faces of a fair die are yellow, two faces red and one blue. The die is thrown twice. The probability that 1st throw will give an yellow face and the second a blue face is

EASY
IMPORTANT

There are 6 red and 5 black balls in a bag. Two balls are drawn at random one after another with replacement. The probability that both the balls drawn may be red is

MEDIUM
IMPORTANT

If 6PA=8PB=14PAB=1, then the PA¯B=.

MEDIUM
IMPORTANT

A bag contains 3 Red balls and 3 Blue balls. A ball is drawn from the bag and if it is of red colour, it is placed back in the bag and if it is of blue colour, it is placed back in the bag with an additional blue colour ball. Choose the correct statement.

MEDIUM
IMPORTANT

If P(A)=12,   P(B)=14 and  P(AB)=58, then PBA=

HARD
IMPORTANT

If two events A and B are such that PA=0.3,PB=0.4, PA¯B¯=0.5, then the value of PBAB¯ is equal to

HARD
IMPORTANT

Let A and B be two events such that PAB=16, PAB=12 and PBA=13, then PA¯B is equal to

EASY
IMPORTANT

If P(E)=0.6, P(F)=0.3 and P(EF)=0.2, then find PF|E.

EASY
IMPORTANT

If P(A)=0.6, P(B)=0.3 and P(AB)=0.2 then find PAB

EASY
IMPORTANT

The letters of the word "LOGARITHM" are arranged at random. The probability that arrangements starts with vowel and end with consonant is

HARD
IMPORTANT

A man is known to speak the truth 2 out of 3 times. If he throws a die and reports that it is six, then the probability that it is actually five is

MEDIUM
IMPORTANT

When two dice are rolled, let x be the probability of getting a sum of the numbers appear on the dice is at most 7. Let y be the probability of getting a sum 7 at least once when a pair of dice are rolled n times. In order to have y>x, the minimum n is

HARD
IMPORTANT

There are two bags, bag 1 contains 3 white and 2 red balls and bag 2 contains 4 white and 5 red balls. A ball is drawn randomly from bag 1 and put in bag 2. Now 2 balls are drawn from bag 2 and found to be red. Then the probability that white ball was drawn from bag 1 to bag 2 is
 

HARD
IMPORTANT

A bag contains 6 red balls and 10 green balls. 3 balls are drawn from it one by one randomly without replacement. If the 3rd drawn ball is red, then the probability that the first two drawn balls are green is