Conditional Probability and Multiplication Theorem

IMPORTANT

Conditional Probability and Multiplication Theorem: Overview

This topic covers concepts such as Conditional Probability, Properties of Conditional Probability, Multiplication Rule of Probability, Independent and Dependent Events, and Independency of Three or More Events.

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:

HARD
IMPORTANT

Let   E c  denote the complement of an event E. Let E,F,G be pairwise independent events with  PG>0 and PEFG=0. Then  PEcFc|G equals 

EASY
IMPORTANT

Two fair dice are rolled. Let X be the event that the first die shows an even number and Y be the event that the second die shows an odd number. The two events X and Y are:

EASY
IMPORTANT

If F and E are events with P(E)=35,P(F)=310 and P(EF)=15, then the events E and F are independent.

EASY
IMPORTANT

A coin is tossed and a die is rolled. The probability that the coin shows head and the die shows 3 is

EASY
IMPORTANT

If A and B are independent events such that P(A)=0.3 and P(B)=0.4 and P(AB)=k100, then the value of k is

EASY
IMPORTANT

If P(A)=713,P(B)=913 and P(AB)=413, find P(A/B).

MEDIUM
IMPORTANT

If A and B are two independent events with P(A)=0.2 and P(B)=0.5, then the value of P(AB) is

HARD
IMPORTANT

A problem in calculus is given to two students A and B, whose chances of solving it are 13 and 14 respectively. Find the probability of the problem being solved, if both of them try independently.

EASY
IMPORTANT

If P(A)=35 and P(B)=15 find P(AB), if A and B are independent events.

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

If A and B are independent events such that odds in favour of A is 2:3 and odds against B is then 4:5, then PAB=

EASY
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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

EASY
IMPORTANT

If A and B are two independent events such that PB=27 and PABC=0.8, then P(AB)=

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

EASY
IMPORTANT

Given two independent events A and B such that PA=0.3, PB=0.6. Find PA or B.

MEDIUM
IMPORTANT

A coin is tossed three times, where event E: head on third toss, event F: heads on first two tosses. Determine PEF.

MEDIUM
IMPORTANT

Given that E and F are events such that PE=0.6,PF=0.3 and PEF=0.2, find PEFand PFE.