UPSC CSAT - All about Permutation & Combination | UPSC 2024 | Short Tricks | OnlyIAS CSAT
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Rishav sir is perfect example of... "Punjabi aage oyeee"
He teaches very well...🤗either its economy or CSAT.
I am so grateful I found such an incredible teacher, who teaches every subject with an aim to bas aisa padha do ki zindagi bhar ke liye samajh aa jaye. Teachers like him are a true gem. This is true service to humanity. I will be forever thankful to you Sir. Thank you for existing. 🙏
Great sir 🙏 🙏 🙏
True
This cleared a lot of doubts especially when you linked different year's PYQs of similar types together. Earlier I was solving SSC CGL Qs of PnC using different formulas but upsc asks different types of PnC questions and I wasted so much time in those Qs which UPSC will never ask. Thanks for this wonderful session.
I also did the same 😢 but any way we found a great youtube channel with great teacher , i feel so blessed and i am so thankful 🙏 to risabh sir ❤
No one teaches CSAT as nicely as him!
Always love the way you teach Sir extremely helpful for us .. Thank You So Much Sir...🙏🏻🙏🏻
Salute sir ,itne simple se samjhaya koi math teacher bhi samajha paate hain
RISHAV = One Man Army
Rishav= Backbone of the channel "OnlyIas Extended"
Rishav= One of the Pillars of OnlyIAS
For me, OnlyIAS is nothing but Rishav Sir...not even Sumit sir, just Rishav Sir, My Favourite Teacher
Same baaki sbh pdhai km backchodi zyada krte h 😂😂
hw 1 :- 360
hw 2 :- 144
hw 3 :- none of these ( answer is 20)
hw 4 :- 32
hw 5 :- 21
hw 6 :- 11
hw 7 :- 36
hw 8 :- 10
hw 9 :- 7998
hw 10 :- 24
hw 11 :- 945
thanks sir... great session....
20 or 22 for hw3
20 or 22 for hw3
@@priy_yaah20
@@priy_yaah 20
One of the best lecture on Such a difficult topic ..Thank You Soo Muchh Sir ❤
Right bro ❤
My favourite is Rishav sir and his favorite is Vaibhav 😂❤..thank u so muvh sir!!
You are the best teacher in mathematics 😊😊
Aaj tk Maine bahoot se teacher se padha probability and permutations and combination but Mera concept clr nhi hua aapki class krne se sabhi concept clr ho gye
Thanku so much sir🙏🙏🙏🙏❤️❤️😀😀
Thank you very much sir, I never found any teacher like you through out my life,
This lecture really helpful for me.
Hat's off ❤
Sir itne lucid ,crystal and clear with conceptual clarity ke saath koi nhi padhata
40:17 question SCHOOL - 360
Question LAYOUT -144
Thank you sir
360 , can u explain.
@@creative_Short285 6 letters ka 6! and oo ka 2!
6!/2!=360
It's 720. Vowels toh pucha nahi arrange karne ke liye@@bajranglohra1524
excellent lecture brother 🙏
Very helpful session. You made it all super easy to understand and remember. Thank you so much sir!😊
hello sir, in practice question of 2019 (combination) triplet(x,y,z) when x=1 fourth value you have written (1,4,2) its total is 7 , correct value is (1,4,1)?
You are right, i would be (1,4,1)
40:12 School ans 360 layout ans 144
please explain layout
@@siddhimishra4708 LAYOUT ( vowels= AOU)(Consonants=LYT) , consider AOU as 1st , L=2nd, Y=3rd and T=4th = 4!; & AOU can be arranged in 3ways like OUA , AUO,OAU = 3! , So 4!*3! = 144
@@Gaurav-fz9qr thanks
Ap pehle mujhe ku nhi mile sir u r the great apki strategy byttt achi lgi padhane ka basic was so good 🥺🙏 thnqq sir
drama kam kor
U made it so easy to understand... I'm stunned sir ❤ thanku so much sir
40:12 m 1). 360
2). 144
Was so scared of this topic, but you made it sooo easy to understand!! Thanks a lot sir
1-360,2-144,3-12
Thank you so much sir for Important session . today clear all concept of permutation and combination topic . Thanks a lot again
Actually thkuuuuu sooo much sir for this specific topic as there is no relevant video on this topic upto csat level...❤❤❤
Thank you so much Sir. I enjoyed yr class and learned a lot✌️
Sir you are th example of entegrity in your work . Bahut hi honest h aap. Sor this hard work thank you so much
Sir next probility topic complete karenge to bhut helpfull hoga
Probability hota hai wo
@@a.k4394kyo bechare ko guilt feel kra rhe ho, sir usko alag se probility pdha denge 😂😂
Yes sir please
"Probability" & "helpful"
Pdf nhi Kiya kya?
1 .360
2. 144
3 . 12 ways principal and vice president choose
Homework questions
4 21 handshake
5. 11 sides of quadrilateral
3 20 ways
Thank you so much sir for a wonderful session 🙏🙏
Thank you rishav sir for bringing out best in ourselves , we are lucky to have you sir 🙏 ❤️ 🎉 ,
sir this is very usefull video. Thank you sooo much🙏
PQ-2015
Ans->(d)none of the above
20?
2015 pyq, principle, voice principle ans = 20, hence none
t or false wale ka answer is 10 , so option A
wedding handshake = 21
sides of polygon = 11
1.59 ..no.. of ways of arranging a,b,c,d,e... = 12
hello baby 😂❤
20 kese
Twinkle twinkle little star
Rishav sir super Star ⭐⭐⭐⭐⭐
40:12 HW SOL.
1)School ans 360
2) layout ans 144
please explain me the Layout answer.. I am very weak in maths🙏
Thank you dear sir nice class
You're teaching methods are wonderful, sir.
Really itna simple kisi ne kabhi nahi samjhaya hoga ye topic heads off to u sir 🎉🎉🎉😊😊😊
Thank u so much sir...v. unique way of teaching...u mk things so simple n easy for us❤😊
Such me. Itna easy way se btae hai aap
1:33:14 - ans-D - 2*5*4=40 as they all are eligible for vice principal post. If 1 of 2 principal candidates becomes principal, remaining 5 are eligible for v.p . So (5*4 for v.p )and *(*2 for principal post)
Bro it's 22 you should add p & vp
This is very helpful. Please post the lecture of other important quant chapters.....❤
Kya gajab teacher hai maine enke eco k bhi lecture dekhe 🙏🙏
You made this topic very easy.. Thnk u sir❤
very good lectures 🙏plz continue this series .very helpful sir thanku so much for this seriea
1.C
2.B
Thank you so much Rishav Sir...Really appreciate the efforts that you are taking for us... The way you explained each and every topic that was amazing... Especially this one... I was so fearful but you made it so simple and easy to understand so thanks for that...🙌🙏👍
Wow, sir you r looking very nice..😊
Sir app bahut accha padhate hoo per Thora simply way me bataye jaise flag colour wala problem use apko bolna tha ki 1st colour hai usko3 way se bhar sakte hai 4 way se bhare ge to same ho jayega adjacent site to 3 way se barege and other 1 or choose kar sakte hai koi 2 niche stripe se
Fir 2nd colour ko 2 way se kar sakte hai fir 3 colour ko bi 2 way se kar sakte
Chahe koi vi color hoo
Ap bahut accha padha te ho per Thora or simple way me padhaye isme nahi ias Wale hai koi bi aspirants hai jaise hm nimcet wala
1:33:34 5 Question of true and false can be answered in 2×2×2×2×2 ways i.e 32 ways.It means in worst case there can be 32 students that can give different answers.33rd student's answer will match with any other student for sure.
Plz tell ki 32 ans kaise hoga ye toh no of diff ways aye jisme students ans de skte h toh itne students kaise hue and also agr hue bhi toh ye kaise ensure hua ki do students ke ans indentical seq mein ni h??
@@mrighsharma6155 in question it is asked the maximum number of students that can be there
You have to assume every student answer differently.In that case maximum 32 students can be possible with each answering differently
Thnku so much sir very helpful.. grateful sir!❤
Thanks a lot sir ….Hats off to your dedication
Best pc video on youtube
1:09:00 sir (1,4,2) nhi (1,4,1) banega ...otherwise sum got 7
40:25 school - 360 & layout -144
please explain me the Layout answer.. I am very weak in maths🙏
1:38:20 option c, 21
Great method of teaching thanks 🙏🙏 sir
mujhe formula ratne me problem hoti h. to ye samjha k padhane ka tarika, best h
Thanku so much sir. Maine 2-3jgha se ye topic samjhne ki koshish ki but mujhse questions solve ni ho pa rhe the kyuki concepts hi smjh ni a rhe the but apne is topic ko itni asaani se smjha diaaaa. Thanku so much sir
Ans-360,144,,option-D,10,21,11
Hates off , amazing teaching
Sir plzz continue this & cover all the topics in CSAT
Having full respect , 1:10:30 correction ...ans 9 bcz in first line last option total 7 ...... Thank u so much sir...😊
Answer 10 hi hai....
It is 1,4,1 - by mistake wrote it wrong but explanation is right....
@@rishavsharma1459 Okay sir..Thank u❤ I will correct in the notebook🌝
Good evening sir
Answer 1. C- 360
Answer 2. B- 144.
This is an amazing lecture. Thank you sir
Sir, Video for percentage plz
thanku so much sir
ऊँ नमः शिवाय ऊँ नमो भगवते वासुदेवाय नमः🙏🙏🙏
Thanks a.ot 😊 sir for this session 😊
Task assigned type ques.
Principal and vice principal - ans= none of the above
True/ false- ans=32
can u please explain the true false ques???
Nice video.... thankyou so much sir
1:11 9 possible value
1:33 hr. ans- (d) none of the above.... bcz actual answer is 20..... and not given in option.... thanks sir
1:33:35 hr answer (d) 32
1:38:22 hr ans- (c) 21
1:52:59 hr ans- (d) 12
1:52:59 C.11
1:52:54 number of side of polygon is 11
How
School- 360; Layout- 144
Awesome class sir ❤❤
Salute
Sir classes se achi mujhe ye CZcams video lgi
Sir please csat ka one shot video ligiye jisme sab cover ho please my csat is not cover😢 and sabhi subjects ki merathon video ligiye please 🙏🙏🙏
नलयाक नही खलनायक बन 😂
U can refer Understand upsc channel for csat
bahut achhe se samjhaye sir thank you
Thank you sir❤
Arrange of school 360 and arrange of layout when vowel are come together 144
please explain me the Layout answer.. I am very weak in maths🙏
In the word LAYOUT, there are three vowels and three consonants. If we consider the three vowels as one letter, then we have four letters to arrange. These four letters can be arranged in 4! ways.
Now, the three vowels can be arranged among themselves in 3! ways.
Therefore, the total number of ways in which the letters of the word LAYOUT can be arranged such that all vowels come together is 4! * 3! = 4 * 3 * 2 * 1 * 3 * 2 * 1 = 144.
So the answer is 144
❤❤❤ fantastic session 😊
My fvrt❤
Really Thank you 🙏
Thank you so so so so much SIR!! ❤🙏
thank u so so soooooooooooooooooooooooo much sir 💎💎💎💎💎💎💎💎💎💎💎💎💎💎💎💎💎
Thank u so much dear sir for this lecture.... Thanks alot...
Thank you 🙏
Thank you so much sir🙏
Homework question answer
Option C(360)
Option B(144)
Option D(None of the above.20)
Side question(Option C(11)
Good method to teac to student
Time worthy session
41:10 combination
Thank you sir. 🙏
Gajab lecture ❤
1:59:19 option C, 945
amazing thanks sirji🙏🙏
26:15 ans 100