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Recent questions tagged probability
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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
2 days
ago
in
Probability
by
Dheera
(
7
points)

6
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
2 days
ago
in
Probability
by
Dheera
(
7
points)

8
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
4 days
ago
in
Probability
by
Dheera
(
7
points)

33
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
6 days
ago
in
Probability
by
Dheera
(
7
points)

9
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
in
Probability
by
Dhruvil
(
11
points)

20
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
in
Mathematical Logic
by
Sharma9999999
(
5
points)

18
views
probability
0
votes
0
answers
Exponential Distribution (probability)  self doubts
asked
Sep 21
in
Probability
by
Dipankar Giri
(
5
points)

14
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
in
Probability
by
Dipankar Giri
(
5
points)

12
views
probability
+1
vote
1
answer
Gravner Probability Exercise
asked
Sep 7
in
Probability
by
Mellophi
(
363
points)

45
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
in
Probability
by
akshita_jain
(
17
points)

221
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
in
Probability
by
aryashah2k
(
2
points)

28
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
in
Probability
by
aryashah2k
(
2
points)

200
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
in
Probability
by
pravincesingh
(
5
points)

107
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
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
in
Probability
by
Raj_81
(
11
points)

15
views
gravner
probability
0
votes
1
answer
#self doubt why is the method wrong to solve the problem
asked
Jun 12
in
Probability
by
abhijeet at
(
9
points)

19
views
combinatory
cards
probability
0
votes
2
answers
#A First Course In Probability Sheldon Ross #self_doubt
asked
May 21
in
Probability
by
Neelam_$ingh_222
(
5
points)

17
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
in
Probability
by
Neelam_$ingh_222
(
5
points)

54
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
in
Probability
by
Neelam_$ingh_222
(
5
points)

34
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
in
Probability
by
admin
(
197
points)

8
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
in
Numerical Ability
by
admin
(
197
points)

4
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
in
Operating System
by
admin
(
197
points)

7
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
in
DS
by
admin
(
197
points)

10
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
in
Probability
by
admin
(
197
points)

5
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
in
Probability
by
admin
(
197
points)

5
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
in
Digital Logic
by
admin
(
197
points)

5
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
in
Probability
by
admin
(
197
points)

5
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
in
DS
by
admin
(
197
points)

7
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
in
Probability
by
admin
(
197
points)

9
views
gate1994
probability
conditionalprobability
normal
isro2017
videosolution
0
votes
0
answers
GATE20151GA10 Video Solution
The probabilities that a student passes in mathematics, physics and chemistry are $m,p$ and $c$ respectively. Of these subjects, the student has $75\%$ chance of passing in at least one, a $50\%$ chance of passing in at least two and a $40\%$ ... Only relation I is true. Only relation II is true. Relations II and III are true. Relations I and III are true.
asked
Apr 18
in
Numerical Ability
by
admin
(
197
points)

4
views
gate20151
numericalability
probability
videosolution
0
votes
0
answers
GATE201324 Video Solution
Consider an undirected random graph of eight vertices. The probability that there is an edge between a pair of vertices is $\dfrac{1}{2}.$ What is the expected number of unordered cycles of length three? $\dfrac {1}{8}$ $1$ $7$ $8$
asked
Apr 18
in
Probability
by
admin
(
197
points)

7
views
gate2013
probability
expectation
normal
videosolution
0
votes
0
answers
GATE201027 Video Solution
What is the probability that divisor of $10^{99}$ is a multiple of $10^{96}$? $\left(\dfrac{1}{625}\right)$ $\left(\dfrac{4}{625}\right)$ $\left(\dfrac{12}{625}\right)$ $\left(\dfrac{16}{625}\right)$
asked
Apr 18
in
Probability
by
admin
(
197
points)

7
views
gate2010
probability
normal
videosolution
0
votes
0
answers
GATE2017231 Video Solution
For any discrete random variable $X$, with probability mass function $P(X=j)=p_j, p_j \geq 0, j \in \{0, \dots , N \}$, and $\Sigma_{j=0}^N \: p_j =1$, define the polynomial function $g_x(z) = \Sigma_{j=0}^N \: p_j \: z^j$. For a certain discrete ... . The expectation of $Y$ is $N \beta(1\beta)$ $N \beta$ $N (1\beta)$ Not expressible in terms of $N$ and $\beta$ alone
asked
Apr 18
in
Probability
by
admin
(
197
points)

12
views
gate20172
probability
randomvariable
videosolution
0
votes
0
answers
GATE2017248 Video Solution
If a random variable $X$ has a Poisson distribution with mean $5$, then the expectation $E\left [ \left ( x+2 \right )^{2} \right ]$ equals ___.
asked
Apr 18
in
Probability
by
admin
(
197
points)

6
views
gate20172
expectation
poissondistribution
numericalanswers
probability
videosolution
0
votes
0
answers
GATE2018GA10 Video Solution
A six sided unbiased die with four green faces and two red faces is rolled seven times. Which of the following combinations is the most likely outcome of the experiment? Three green faces and four red faces. Four green faces and three red faces. Five green faces and two red faces. Six green faces and one red face
asked
Apr 18
in
Numerical Ability
by
admin
(
197
points)

6
views
gate2018
numericalability
probability
normal
videosolution
0
votes
0
answers
GATE200829 Video Solution
Let $X$ be a random variable following normal distribution with mean $+1$ and variance $4$. Let $Y$ be another normal variable with mean $1$ and variance unknown. If $P (X ≤ 1) = P (Y ≥ 2)$ , the standard deviation of $Y$ is $3$ $2$ $\sqrt{2}$ $1$
asked
Apr 18
in
Probability
by
admin
(
197
points)

6
views
gate2008
randomvariable
normaldistribution
probability
normal
videosolution
0
votes
0
answers
GATE200724 Video Solution
Suppose we uniformly and randomly select a permutation from the $20 !$ permutations of $1, 2, 3\ldots ,20.$ What is the probability that $2$ appears at an earlier position than any other even number in the selected permutation? $\left(\dfrac{1}{2} \right)$ $\left(\dfrac{1}{10}\right)$ $\left(\dfrac{9!}{20!}\right)$ None of these
asked
Apr 18
in
Probability
by
admin
(
197
points)

5
views
gate2007
probability
easy
uniformdistribution
videosolution
0
votes
0
answers
GATE201844 Video Solution
Consider Guwahati, (G) and Delhi (D) whose temperatures can be classified as high $(H)$, medium $(M)$ and low $(L)$. Let $P(H_G)$ denote the probability that Guwahati has high temperature. Similarly, $P(M_G)$ and $P(L_G)$ ... , then the probability (correct to two decimal places) that Guwahati has high temperature given that Delhi has high temperature is _____
asked
Apr 18
in
Probability
by
admin
(
197
points)

8
views
gate2018
probability
conditionalprobability
numericalanswers
videosolution
0
votes
0
answers
GATE201947 Video Solution
Suppose $Y$ is distributed uniformly in the open interval $(1,6)$. The probability that the polynomial $3x^2 +6xY+3Y+6$ has only real roots is (rounded off to $1$ decimal place) _______
asked
Apr 18
in
Probability
by
admin
(
197
points)

7
views
gate2019
numericalanswers
engineeringmathematics
probability
uniformdistribution
videosolution
0
votes
0
answers
GATE20012.4 Video Solution
Seven (distinct) car accidents occurred in a week. What is the probability that they all occurred on the same day? $\dfrac{1}{7^7}\\$ $\dfrac{1}{7^6}\\$ $\dfrac{1}{2^7}\\$ $\dfrac{7}{2^7}\\$
asked
Apr 18
in
Probability
by
admin
(
197
points)

1
view
gate2001
probability
normal
videosolution
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