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Recent questions tagged probability
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TIFR2019 probabilty
consider an urn with ‘a’ red and ‘b’ blue ball . Balls are drawn out one by one without replacement uniformly at random until the first red ball is drawn .what is expected no of ball drawn?
asked
Mar 25
in
Probability
by
sridhar15399
(
5
points)

5
views
probability
0
votes
0
answers
TIFRGS2021 Question
Lavanya and Ketak each flip a fair coin (i.e., both heads and tails have equal probability of appearing) $n$ times. What is the probability that Lavanya sees more heads than Ketak? In the following, the binomial conefficient $n\choose k$ counts the number of $k$element subsets of an $n$element ... $\sum_{i=0}^{n}\frac{{n\choose i}}{2^{2n}}$
asked
Mar 24
in
Probability
by
zxy123
(
3.6k
points)

7
views
tifr2021
probability
0
votes
0
answers
TIFRGS2021 Question
A matching in a graph is a set of edges such that no two edges in the set share a common vertex. Let $G$ be a graph on $n$ vertices in which there is a subset $M$ of $m$ ... $p^{2m}$ (D) $(1  p^2)^m$ (E) $1  (1  p(1  p))^m$
asked
Mar 24
in
Probability
by
zxy123
(
3.6k
points)

7
views
tifr2021
probability
0
votes
0
answers
TIFRGS2021Question
What is the probability that at least two out of four people have their birthdays in the same month, assuming their birthdays are uniformly distributed over the twelve months? (A) $\frac{25}{48}$ (B) $\frac{5}{8}$ (C) $\frac{5}{12}$ (D) $\frac{41}{96}$ (E) $\frac{55}{96}$
asked
Mar 24
in
Probability
by
zxy123
(
3.6k
points)

7
views
tifr2021
probability
0
votes
1
answer
East Africa University Second Semester Probability and statistics 2020
asked
Mar 7
in
Revision
by
vanso 254
(
5
points)

24
views
probability
0
votes
0
answers
Which books should i refer for learning distributions in probability?
asked
Mar 4
in
Probability
by
kaleen bhaiya
(
9
points)

14
views
probability
+1
vote
0
answers
DRDO 2020 computer science descriptive exam
Consider a binomial experiment of flipping a biased coin five times with probability of head ,p=0.75 and probability of tail q=0.25 in each flip. What is the probability that last two flips will be heads if the first three flips are known to be tails ?
asked
Feb 25
in
Probability
by
rapidxy
(
9
points)

25
views
probability
selfdoubt
0
votes
1
answer
Made easy postal course
A bag contains 5 black, 2 red and 3 white marbles. Three marbles are drawn simultaneously. The probability that the drawn marbles are of the different color is ?
asked
Jan 19
in
Probability
by
dilip2812
(
7
points)

22
views
probability
+1
vote
1
answer
Probablity engineering mathematics
A box contains 10 apples out of which 4 are rotten. Two apples are taken out together if one of them is good what is the probablity that the other one is also good. Note: Please don’t use ‘C’ combination terms in your answer rather try to make it as clear as possible.
asked
Jan 17
in
Mathematical Logic
by
donniedarko
(
39
points)

31
views
probability
0
votes
0
answers
Previous year question
In this previous year question https://gateoverflow.in/179371/, can someone PLEASE explain why is it wrong to say that if i have probability of success = $\frac{1}{26^{10}}$ ... ? Please give a proper reason like, the reason why we can't say the answer is B is because checking is a dependent event.
asked
Jan 9
in
Probability
by
reboot
(
5
points)

30
views
probability
0
votes
1
answer
What is the actual formula for the efficiency in CSMA/CD?
asked
Dec 8, 2020
in
Computer Networks
by
HitechGa
(
9
points)

41
views
probability
0
votes
0
answers
Probability NCERT Book Doubt
The probability of number of defectives in a lot is 35%. There are 4 items taken out with replacement. Find the probability that none of the items are defective?
asked
Nov 30, 2020
in
Probability
by
Dheera
(
14
points)

36
views
probability
0
votes
1
answer
Probability Binomial Distribution NCERT Doubt
In a hurdle race, a player has to cross 10 hurdles. The probability that he will clear each hurdle is 5/6 . What is the probability that he will knock down fewer than 2 hurdles?
asked
Nov 30, 2020
in
Probability
by
Dheera
(
14
points)

28
views
probability
+1
vote
1
answer
Probability ncert doubt
Find the probability that at most 2 heads and at most 2 tails occur when 4 coins are tossed simultaneously?
asked
Nov 29, 2020
in
Probability
by
Dheera
(
14
points)

47
views
probability
selfdoubt
0
votes
0
answers
Bayes Theorem self doubt
A card from a pack of 52 cards is lost. From the remaining cards of the pack, two cards are drawn and are found to be both diamonds. Find the probability of the lost card being a diamond.
asked
Nov 27, 2020
in
Probability
by
Dheera
(
14
points)

20
views
probability
selfdoubt
+1
vote
1
answer
TIFR 2020 From System Science
Balls are drawn one after the other uniformly at random without replacement from a set of eight balls numbered 1,2,...,8 until all balls drawn what is expected number of balls whose value matched their ordinality (i.e their position in the order in which ... that the ith ball is drawn at the ith draw ? now can you use linearity of expectation to solve the problem
asked
Nov 26, 2020
in
Probability
by
Dhruvil
(
11
points)

30
views
probability
0
votes
0
answers
Probability # Self doubt # GO test
How to solve this calculation step by step ? Ans is 99.56%.
asked
Oct 22, 2020
in
Mathematical Logic
by
Sharma9999999
(
5
points)

20
views
probability
0
votes
0
answers
Exponential Distribution (probability)  self doubts
asked
Sep 21, 2020
in
Probability
by
Dipankar Giri
(
5
points)

17
views
probability
0
votes
0
answers
Uniform Distribution (Probability)Self doubts
What is Uniform Distribution in Probability?? Please discuss it with example!!! Thank you!!!
asked
Sep 21, 2020
in
Probability
by
Dipankar Giri
(
5
points)

14
views
probability
+1
vote
1
answer
Gravner Probability Exercise
asked
Sep 7, 2020
in
Probability
by
Mellophi
(
363
points)

52
views
probability
+1
vote
4
answers
probability basic
In a family with 4 children, what is the probability of a 2:2 boygirl split?
asked
Aug 20, 2020
in
Probability
by
akshita_jain
(
17
points)

245
views
probability
0
votes
1
answer
Combinatorics and Probability
Six people, including A,B, and C, form a queue in a random order (all 6! orderings are equiprobable). Consider the event "B is between A and C in the queue". What is its probability? (The order of A and C can be arbitrary, but B should be between them).
asked
Aug 5, 2020
in
Probability
by
aryashah2k
(
2
points)

35
views
permutation&combination
conditionalprobability
discretemaths
probability
combinatory
0
votes
2
answers
Combinatorics and Probability
Six people including A,B, and C, form a queue in a random order (all 6! orderings are equiprobable). Consider the event "A precedes B in the queue". (Again this event does not mention C or other people in the queue. It happens when A is ... not require that B is the next after A, some people could be between A and B.) What is the probability of this event?
asked
Aug 5, 2020
in
Probability
by
aryashah2k
(
2
points)

323
views
conditionalprobability
permutation&combination
discretemaths
probability
0
votes
2
answers
TCS MockVita 2020 , Lazy Student
There is a test of Algorithms. Teacher provides a question bank consisting of N questions and guarantees all the questions in the test will be from this question bank. Due to lack of time and his laziness, Codu could only practice M questions. There ... problems. Codu can't solve the question he didn't practice. What is the probability that Codu will pass the test?
asked
Jul 2, 2020
in
Probability
by
pravincesingh
(
5
points)

143
views
probability
tcs
0
votes
0
answers
PROBABILTY AND DISTRIBUTIONS
A elevator manufacturing company believes that 'X' is the amount of that can elevator withstand without any damage with is mean 100 and standard deviation 10. This elevator is used to lift the company staff persons with mean 5 and standard deviation 0.5. How many staff person would have to be in the elevator for the probability of No damage exceeds to 0.85.
asked
Jun 30, 2020
in
Mathematical Logic
by
Stanfordboi
(
5
points)

14
views
discretemaths
probability
poissondistribution
binomialdistribution
0
votes
1
answer
What are the relevant chapter in Gravner for Probability ?
asked
Jun 26, 2020
in
Probability
by
Raj_81
(
23
points)

17
views
gravner
probability
0
votes
1
answer
#self doubt why is the method wrong to solve the problem
asked
Jun 12, 2020
in
Probability
by
abhijeet at
(
9
points)

23
views
combinatory
cards
probability
0
votes
2
answers
#A First Course In Probability Sheldon Ross #self_doubt
asked
May 21, 2020
in
Probability
by
Neelam_$ingh_222
(
5
points)

25
views
selfdoubt
probability
0
votes
1
answer
A first course in probability by Ross
A basketball team consists of 6 frontcourt and 4 backcourt players. If players are divided into roommates at random, what is the probability that there will be exactly two roommate pairs made up of a backcourt and a frontcourt player?
asked
May 21, 2020
in
Probability
by
Neelam_$ingh_222
(
5
points)

81
views
probability
0
votes
1
answer
A first course in probability
Let A denote the event that the midtown temperature in Los Angeles is 70◦F, and let B denote the event that the midtown temperature in New York is 70◦F. Also, let C denote the event that the maximum of the midtown temperatures in New York and in Los Angeles is ... ,P(B) = .4, and P(C) = .2, find the probability that the minimum of the two midtown temperatures is 70◦F.
asked
May 21, 2020
in
Probability
by
Neelam_$ingh_222
(
5
points)

49
views
probability
0
votes
0
answers
GATE201233 Video Solution
Suppose a fair sixsided die is rolled once. If the value on the die is $1, 2,$ or $3,$ the die is rolled a second time. What is the probability that the sum total of values that turn up is at least $6$ ? $\dfrac{10}{21}$ $\dfrac{5}{12}$ $\dfrac{2}{3}$ $\dfrac{1}{6}$
asked
Apr 18, 2020
in
Probability
by
admin
(
573
points)

9
views
gate2012
probability
conditionalprobability
normal
videosolution
0
votes
0
answers
GATE2012 CY: GA7 Video Solution
$A$ and $B$ are friends. They decide to meet between 1:00 pm and 2:00 pm on a given day. There is a condition that whoever arrives first will not wait for the other for more than $15$ minutes. The probability that they will meet on that day is $1/4$ $1/16$ $7/16$ $9/16$
asked
Apr 18, 2020
in
Numerical Ability
by
admin
(
573
points)

7
views
gate2012cy
numericalability
probability
videosolution
0
votes
0
answers
GATE2007IT58 Video Solution
A demand paging system takes $100$ time units to service a page fault and $300$ time units to replace a dirty page. Memory access time is $1$ time unit. The probability of a page fault is $p$ ... the average access time is $3$ time units. Then the value of $p$ is $0.194$ $0.233$ $0.514$ $0.981$
asked
Apr 18, 2020
in
Operating System
by
admin
(
573
points)

13
views
gate2007it
operatingsystem
pagereplacement
probability
normal
videosolution
0
votes
0
answers
GATE2007IT28 Video Solution
Consider a hash function that distributes keys uniformly. The hash table size is $20$. After hashing of how many keys will the probability that any new key hashed collides with an existing one exceed $0.5$. $5$ $6$ $7$ $10$
asked
Apr 18, 2020
in
DS
by
admin
(
573
points)

12
views
gate2007it
datastructures
hashing
probability
normal
videosolution
0
votes
0
answers
GATE2017119 Video Solution
Let $X$ be a Gaussian random variable with mean 0 and variance $\sigma ^{2}$. Let $Y$ = $\max\left ( X,0 \right )$ where $\max\left ( a,b \right )$ is the maximum of $a$ and $b$. The median of $Y$ is ______________ .
asked
Apr 18, 2020
in
Probability
by
admin
(
573
points)

10
views
gate20171
probability
numericalanswers
normaldistribution
videosolution
0
votes
0
answers
GATE201412 Video Solution
Suppose you break a stick of unit length at a point chosen uniformly at random. Then the expected length of the shorter stick is ________ .
asked
Apr 18, 2020
in
Probability
by
admin
(
573
points)

7
views
gate20141
probability
uniformdistribution
expectation
numericalanswers
normal
videosolution
0
votes
0
answers
GATE201922 Video Solution
Two numbers are chosen independently and uniformly at random from the set $\{1,2,\ldots,13\}.$ The probability (rounded off to 3 decimal places) that their $4bit$ (unsigned) binary representations have the same most significant bit is _______________.
asked
Apr 18, 2020
in
Digital Logic
by
admin
(
573
points)

8
views
gate2019
numericalanswers
digitallogic
numberrepresentation
probability
videosolution
0
votes
0
answers
GATE2005IT32 Video Solution
An unbiased coin is tossed repeatedly until the outcome of two successive tosses is the same. Assuming that the trials are independent, the expected number of tosses is $3$ $4$ $5$ $6$
asked
Apr 18, 2020
in
Probability
by
admin
(
573
points)

7
views
gate2005it
probability
binomialdistribution
expectation
normal
videosolution
0
votes
0
answers
GATE2014340 Video Solution
Consider a hash table with $100$ slots. Collisions are resolved using chaining. Assuming simple uniform hashing, what is the probability that the first $3$ slots are unfilled after the first $3$ insertions? $(97 \times 97 \times 97) / 100^3$ $(99 \times 98 \times 97) / 100^3$ $(97 \times 96 \times 95) / 100^3$ $(97 \times 96 \times 95 / (3! \times 100^3)$
asked
Apr 18, 2020
in
DS
by
admin
(
573
points)

8
views
gate20143
datastructures
hashing
probability
normal
videosolution
0
votes
0
answers
GATE19941.4, ISRO20172 Video Solution
Let $A$ and $B$ be any two arbitrary events, then, which one of the following is TRUE? $P (A \cap B) = P(A)P(B)$ $P (A \cup B) = P(A)+P(B)$ $P (A \mid B) = P(A \cap B)P(B)$ $P (A \cup B) \leq P(A) + P(B)$
asked
Apr 18, 2020
in
Probability
by
admin
(
573
points)

13
views
gate1994
probability
conditionalprobability
normal
isro2017
videosolution
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