Probability - Shortcuts & Tricks for Placement Tests, Job Interviews & Exams
ฝัง
- เผยแพร่เมื่อ 1 ส.ค. 2024
- Crack the quantitative aptitude section of Placement Test or Job Interview at any company with shortcuts & tricks on Probability. Extremely helpful to crack entrance exams like MBA, Banking - IBPS, SBI, UPSC, SSC, Railways etc.
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www.tutorialride.com/
www.careerride.com/
#Probability #QuantitativeAptitude #PlacementTest
0:00 Quantitative Aptitude
1:25 EASY Formula
9:58 Suresh keeps all his socks in a single drawer. He has 24 pairs of white socks and 18 pairs of grey socks. Suresh picks 3 socks randomly. Find the possibility of Suresh choosing a matching pair?
13:02 What will be the possibility of drawing a jack or a spade from a well shuffled standard deck of 52 playing cards?
18:16 A box has 6 black, 4 red, 2 white and 3 blue shirts. When 2 shirts are picked randomly, what is the probability that either
22:52 A pot has 2 white, 6 black, 4 grey and 8 green balls. If one ball is picked randomly from the pot, what is the probability of it being
24:15 There are 2 pots. One pot has 5 red and 3 green marbles. Other has 4 red and 2 green marbles. What is the probability of drawing
29:15 In a set of 30 game cards, 17 are white and rest are green. 4 white and 5 green are marked IMPORTANT. If a card is chosen randomly from this set, what is the possibility of choosing a green card or an 'IMPORTANT card?
32:20 A box has 6 black, 4 red, 2 white and 3 blue shirts. Find the probability of drawing 2 black shirts if they are picked randomly?
33:37 A box has 6 black, 4 red, 2 white and 3 blue shirts. What is the probability that 2 red shirts and 1 blue shirt get chosen during a random selection of 3 shirts from the box?
38:31 A box has 6 black, 4.red, 2 white and 3 blue shirts. What is probability of picking at least 1 red shirt in 4 shirts that are randomly picked?
44:04 On rolling a dice 2 times, the sum of 2 numbers that appear on the uppermost face is 8. What is the probability that the first throw of dice yields 4?
46:25 A box has 5 black and 3 green shirts. One shirt is picked randomly and put in another box. The second box has 3 black and 5 green shirts. Now a shirt is picked from second box. What is the
51:10 What is the possibility of having 53 Thursdays in a non-leap year?
52:47 In a drawer there are 4 white socks, 3 blue socks and 5 grey socks. Two socks are picked randomly. What is the possibility that
55:24 What is probability of drawing two clubs from a well shuffled
56:44 What are the chances that no two boys are sitting together
Practice Questions on "Probability" available at: www.careerride.com/mcq/probability-quantitative-aptitude-mcq-questions-41.aspx
In question no:8 why do you consider the order of choosing(permutation).all they wanted is just 2 red and 1 blue right?
Sir I hav doubts so I need any medium to clarify with u....
@@Karthikeyan-er7hnEven if they take that, they didn't multiply it by the probability of choosing the combination.
Sir, in the 2nd question, jack of spade is 1/13. So, why we subtract 1/52??
It has only 30 questions and that to they are same questions as explained in the video .please upload new questions.
Indian guys on youtube are better than professors in my university.
100% true
Exactly 😂
same true even for india. Professors in indian colleges are worst , especially in so called government colleges. TH-cam is savier for us. there are very very few professors 1 in a 1000 which are good.
Bhai shi me.. Muje lgta tha ma bahut nikama hu.. Jb school m sar k upar se jati thi ye chize us tym you tube hoti mere pass to topper ma bi hota
Agreed....
i just like the way how he says "easy" before starting every problem
PS:- I got placed in 2 top MNCs... thanks and credits to careerride!
Me tooo
My maths teacher "ss bharti" also say "it is of nursery level" to tough maths problem. It is a good teaching technique.
I also like it 🤗it's amazing
@@kanikavyas3845 love u beautiful ❤️
It's not that much easy
I was so afraid of starting probability because none of my answers used to match. After attending this session I have started getting those right. Thank you for the amazing lecture. Also starting every problem by saying "easy" helped me a lot. :p
I can't give you a like, i am afraid I'll ruin the legendary number of likes
This is one of the best you tube channel for learning of aptitude in best way. It's very fruitful for those who seeks to learn aptitude in easy way.
Thank you soo much for your videos Sir, they helped me a lot... I have been placed at Infosys!😀
Congrats, Snehal. That's a great news. All the best. :)
Snehal Jituri how did u get placed????congrats...plz give ur inputs ...
hey sis... give me some tips .. i am in Btech final year from electronics branch
Congrats
Nice joke
This video is really helpful for the students of campus placements, after watching this video i realize that probability is not that much tuff what I though about this , the way of teaching is also excellent , nicely explained .
GRE?
you have made everything so clear. May god bless you
I want to say thanks for career ride .I don't know about aptitude and reasoning but career ride helped me in gaining knowledge.there videos are crystal clear.please make some more videos on aptitude.thank you
Great class sir.. everything is commendable, the way you are explaining, the sums you have taken..all are good. Highlight of the class is that you haven't used any formula to solve even a single sum that is what attracted me more..
Thank you so much for this. This is helping me alot during my placements which is going on right now.🙏
Q 10).......Answer would be 1/5 instead of 1/36 coz the sample space would shrink due to the given condition
Even i think so. cause if given the 6 probability in total in first throw of dice then it also includes 1. And if 1 is considered then the sum can never be 8. And it is like( considering previous questions of shirts, 6 black, 4 red , 2 white and 3 blue), if the question says, black shirt is never picked so what is the probability of choosing blue shirt? so here probability would be 3/9.
Because question already sates that black shirt is never picked so no of total probability decreases. Likewise, in this question, the sum is 8, so it automatically eradicates the possibility of coming 1 is removed. So left total possibility is 5 in total. So answer is 1/5. Again, if it asked in both the throw the probability of coming 4 and 4 for summing up 8 then it would be only (1/5) * (1/5) = 1/25 .
Hope it helps. My own calculation, verify it first.
P.S= Great content sir. Keep it up @CareeRride. And if my explanation is correct then please do or atleast pin my comment. Thanks!!
Sir ur lec. Are great helping all student community.
Sir plz add mensuration, case puzzles, data sufficiency , odd one out, flow chart, etc this will further help us sir.
Thank you for great session.
I am loving you for increasing my probability to love Probability!
46:13 the answer is 1/5 and not 1/36 since it is already given that the sum of the faces of dices is 8 we should not consider all 36 possibilities
I too had the same query
no u r wrong bro...total outcomes will be 36.
Yeah, you are right.It should be 1/5
Solution :-A dice has 6 faces
So there are 6 possible outcomes
Dice is rolled once and then again
So total possibilities = 6 × 6 = 36
The sum should be 8 of the 2 throws
So which combination of numbers from 1 to 6 will yield us a sum of 8
They are - (2, 6); (6, 2); (3, 5); (5, 3); (4, 4);
So there are total 5 possibilities where addition is 8.
But only 1 possibility where first throw of dice is 4.
So, Probability for first throw to be 4 and sum to be 8 = 1/36.
Answer is 1/5
Question 15) you can just use P = Np - 1, where Np is the probability of two boys sitting together which is 2/7.
This video is a gem, It helped me to understand probability so fast
Sir you have explained probability in such a wonderful way that I didn't find in any you tube channel. Thank you so much Sir for clearing our concepts of probability .
You're welcome, Dua! Please subscribe the channel for more career related videos and stay connected :)
You are doing a great job for making the concept clear for all of Us out here
Wow. That's what I call a perfect video on probability. Everything is so clear to me now. Thank you! :)
oho good good
This guy knows what's up. He just needs to learn how to articulate and convey his thoughts effectively and efficiently. Keep it up!
bc
The Best explanation of the things which is not there in another channel.
Very nice effort, keep it up ...
For 15 que sir we can easily take
P of sitting boys together+ p of not sitting together =1
2/7+ NP=1
NP=1-2/7
NP=5/7
Thank you so much sir. Very helpful
😃Sir actually I am preparing for a complicative exam.🙂 your every video is helping me me to study 📚✏more
And I don't like maths before after when I started 👀seeing your videos I really like maths more than any other subject now ☺ can u do some videos 🎥 like this
Rational exponents and radicals, Alergic expression and identites, Liner equation in one variable, Factorisation, Simple interest and componed interst, Geometry, Mensuration, Statistics and data representation please 😄
Excellent explanations. Thanks!
Amazing choice of questions and amazing teaching style. Thanx a lot , after watching this video I got to know how easy probability is.
Thank you so much sir . Aatapryant khup probability che video lecture pahile but Itaka clearly, itaka super understanding kuthech hote nvte thanks a lot
51:08 the question (11) states that one shirt is picked randomly and put into another box. The situation where one shirt was picked from second box and put into first should also be considered here.
ya you are right
No it cant be considered here as the statement for the second box is given after it says it replaces one of the tshirts to another (so here another box means the second box).
it would have been as you saying only when both info regarding the boxes would have been given in the first two statements followed by the replacement statement.
Can anyone tell me jaisa Q-8 mai kra h wesa Q-7 mai kyu nhi kraa???
I am really confused in it , i thought 8 bhi 7 ki trah hoga😔
I can't understand anyone else's video just searching for yours always!
Pakka class sir.... its too easy to understand..thank you
Your video makes the whole concept of probability easy. Thank you!!
sir plzz prepare tutorials on calendar and clock also
Thanks sir for your explanation. The way you Explain probability it becomes easy for me now
Thank You for uploading this series I had completed all the videos of this series today and now going to watch Logical Reasoning series that was upload by you.
Once again Thank You!!
35:22 only selection, not arranging
Keep doing videos like this 🙏 these videos are very helpful to students who are preparing for placements 😀
Never seen such brilliant explanation before
I appreciate your way of teaching sir. Before watching this video i that i feel probability to understand.after watching this video i am feeling it is so easy compare to all topics.thank you sir.we need some more videos.
Thanks, Maksood! Glad to know that you found the content useful. Stay connected :)
Thanku sir for such a great explaination i understood everything you taught so thanku for that.
For the 15th sum, I just did
P = (G,G) OR (B,G) for two consecutive positions...
P = [ (5/7) × (4/6) ] + [ (2/7) × (5/6) ]
P = 5/7
Can anyone tell me jaisa Q-8 mai kra h wesa Q-7 mai kyu nhi kraa???
I am really confused in it , i thought 8 bhi 7 ki trah hoga😔
Nice 👏
But you have to consider Probability of (G.B) also
Tq so much sir. Your way of explaining is excellent sir
thank you sir helping me a lot in preparing placements
ques no 11: after picking a shirt from first box the second box would have either 3 black or 4 black so prob is 3/9+4/9=7/9
yaa bro exactly
we have many videos in You Tube for Quantitative Aptitude and Logical Reasoning , I was Confused what to watch and Learn. But "CareerRide" is the BEST video Tutorials , I have found in You Tube to quick revise and all the tips and tricks , very useful in making me successful in learning without ambiguity in the concepts, by covering all the concepts. Thank you so much sir..!!
This is just because of the clarity in teaching the Questions well and covering all the important questions which comes in the placements and other competitive Exams
Thanks, Vamshi! Pleased to see that our videos are helpful to students :-)
u amazing..... i admire uu sir
Thank you so much for this tutorial. By the way I've doubt in question no.10 in this video. so, far I've understood from your lecture the total outcomes will be 5 and not 36. Becasue we're concerned with the outcomes not only giving 4 but also the sum must be 8. So that is 1/5 instead of 1/36.
exactly
Correct
That is why I am here for confirmation
Thanks 🙏
Yeah
pin this
Kudos to you... I hated probability, permutations and combinations during my school days. But ur teaching is so awesome which covers all types with EASY tricks ☺️
Tq sir for making probability easy to understand
i cant thank u enuf fr ds video..ua d best
You know what i like in your videos that you are explaining 1Chapter in single video and cover whole topics. thanks and by the way sir whats your name
Thanks, Rohan! He is Manas Sir!
Question number 10 should be 1/5 because among the possible outcomes of sum of 8, we have to choose 1 condition. Any output should have sum of 8.
Yes, me too think so. Because, since the event of having the sum being ‘8’ already happened, we are left with only five possibilities; among which only 1 out of 5 yields 4 in first throw.
It really makes sum easier when sir u say easy at the start of numerical 😊😊
thankyou so much for such a good and understandable video sir...!!!❤💫🌸😄
Best tutorial ever..so easy to understand..thank u sooo much :)
Thanks, Drishti. Do take benefit of Logical reasoning and HR Interview sections as well. All the best! :)
zbrdast i understand it ur way or understanding is to much easy
Understand easily superb sir
It can't be taught in any better way than this.
Thank you so much
Your class is better than coaching institutes which have studied. 👍👍
Thanks a lot 😊
All concepts are explained very nicely and clearly...Thanx Sir👍
Perfect explanation sir with out using combinations concept
thank you for making this video, i got to learn so many things.
Super class i can easy to understand thanks sir
I have never seen a video like it on probability .. Veryyy niceee video
Excellent channel and class 👌
So nice sir thank you so much
Very well explained 🥳🥳
Mene saare quantitative aptitude k videos dekhe hai aapke iss 1 month me.......
Bhot acha lagta h jab har question se phle aap bolte ho( very easy)
Sachi.....vo question easy lgne lagta h
Thanks, Priyanshi. You see.....that's how our mind works :)
in question 8 we can use (4c2*3c1)/15c3 . it will be more time saving.
explained very well. Please add some videos on Bayes theorm ! thank you
This is not GATE or ESE exam fr learning Baye's theorem. This is placement test oriented video
Sir bahot achhe videos hai ...its very understanding for me
On question 10, I feel it is more natural to read it as a conditional probability question, i.e. P(first throw was 4 | sum of two throws is 8), which I'd think is 1/5 (5 possibilities to have sum equal to 8, out of which 1 has 4 as first throw). The author now answers the question 'what is the probability of throwing two 4s when rolling a dice twice', ignoring the information we have about the sum.
Nope the question says --- out of the total possibilities ie 36 😊
just awesome.....god bless u🙇♀️🙇♀️
Ok now this is literally GOLD
Tysm sir for this amazing video.. really it helped lot..
Thank you careerride! amazing content
these questions can be easily done with combination
Thank u for providing such a wonderful session
It is very useful for me in this situation,Tq sir for uploading.can u upload the race and games of skills And calnders ..
In question 10, the probability should be 1/5 because the total space was reduced to only 5 elements which will get the sum 8.
Yeah it should be 1/5
yes, 1/5 is the answer.
You are absolutely correct
@@lks5343 I don't think so. They are just possibilities that add up to 8. yet the real sample space is still 36
nooooo..total number of possibilities were still 6×6. so the answer would be 1/36.
A huge thank to you
Thx alot sor
Just awesome
sir ur way of explanation is gud
The correct answer for question no 10 is 1/5 .
Since it's already given that sum is 8 so our sample space is (6,2) , (5,3) (4,4) (3,5) ( 2,6) .
Hence favourable / total = 1 / 5
Great video.. Thankuu soo much sir
Thank you very much sir, thank you thank you thank you, we are blessed with these wonderful videos
Thank you everyone involved behind these videos🙏👍👏👏👍🙏
You are most welcome :). Stay connected.
You have explained it very well 😊. Thank you
Thanks!! It helped me a lot!! 😀😀😀
Wonderful explaination....kindly post tutorial video on linear regression and test of hypothesis
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Very informative. Thank you Sir🙏
Sir it's fantastic..I like your teaching style🤘😎🤘..
U are a lifesaver!!!!💐💐
Good video and awesomely explained sir.
Sir pls do a video on area and volume.
Tq sir good revision has been done ❤
I believe the 10th question is a case of conditional probability, so the answer would be 1/5 instead of 1/36
Yes. Well done buoy. Found the same mistake 👍🏻
Same
Thks for clearing all my doubts.
Very useful for a beginner 👍
Thank you so much for the playlist
These ques can also be solved using combination but u have solved by basic thnq for doing it .bcoz while solving it by combination i might get confuse in some ques but by basic method i can solve every ques.THNQ really helpful
Thanks, Aditya! Stay connected :)
I think Factorisation is really hard when the power of the polynomial is 3 or higher. Can you please make a video explaining Factorisation?? Your Videos are AWESOME BTW....