11:00 AM SSC/Railway/Defence Exams | Maths by Sahil Khandelwal | Permutation & Combination (Part-4)
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- Опубликовано: 13 окт 2024
- SSC/ Railway/ Defence Exams | RRB Group D Maths by Sahil Sir | Maths Permutation & Combination by Sahil Sir | Permutation & Combination Questions for NTPC | Permutation and Combination for SSC Exams | wifistudy
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8:00PM Catch the Math 2.0 Best Ever Practice 11 (13 May):-unacademy.com/class/800pm-catch-the-math-20-best-ever-practice-11-13-may/7U3KWCHW
Sahi baat h sir permutations combination kya kisi bhi topic ko itna best koi nhi pda skta aapke alawa
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
@@pubgplayer.143 aree bhai ...ek mai dono alternate bole hai or ek sirf two girls not together so ek case yhh v ho skta hai(g b b g) isliye iski possibilities jyada bnti hai as compared dono agr alternate ho..
Doubt in question no 28
Sir according to me
Formula will be = (n-2) (n-1)!
[Instead of = (n-1) (n-2)! ]
Bcz when we do directly
Total no of ways - no of ways when books are together
= 11! - 10! ×2!
= 10! (11-2)
= 10! × 9 [.: (n-2) (n-1)! ]
Right
If u find theoretically u can get Ans 👇
Total 11! - Together (10! *2!)
@@elonmusk3579 yes bro you r right. My ans also 9*10!
Yes this one right .
Ans - 9*10!
Sir ka dimag kaha hai kon jante. Achanak gussa ho jate. Koi concept nehi. Aise thori hote hai. Har ek formula k piche concept hai.kaise hua.
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Sir, Apka jaisa PERMUTATIONS AND COMBINATION itna Acha Se samjhana and achi si questions kar wana Koi ni kiye...🙏🙏🙏
Awesome session sir... ❤️☺️👍🙏
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Thanku sirjii aaj se phele mujhe kbi ye chapter smj nii aaya tha but apne bhot ache se smja dia hr concept 🙏🙏🙏🙏 awesome session sirjii
Homework -. 31.60 32. 120. 35. 125. 36. 66. 37. 105. 38. 153. 39. 21
40. 190. 41.15. 43.775. 44.11.
Aapke kitne chapter clear hai
isi video ka question no. 16 ..... 5 boys and 5 girls sit in a circle so that no two boys can sit together ....sir ne btaya ki phle girls ko arrange kr do fr boys ko kyuki boys unke bich mein baithenge ...(5-1)! × 5!.....
par isko total arrangements - boys ek sath baithe wali aarangements... (10-1)! - (6-1)! ×5 !
(6-1)! ×5! ye boys sit together ...jaise sir ne isi video k 1st question mein smjhaya tha jha girls sit together ki thi waise hi aaya hai....to hum
aise kyu nhi kr skte ?? dono ka answer alg alg aata hai....
Thank you 🙏 sir for this wonderful session
superb way of elucidate everything
perfect instance of " Action speaks louder than words".......
Sir jab ye class live thi tab aapki baatein or content ki value nhi thi lekin ab jakar baat or content dono ka importance smjh aa gya
ସାର୍ ଆପଣଙ୍କ ବହୁତ ବହୁତ ଧନ୍ୟବାଦ।।।।।।।❤️❤️❤️❤️❤️❤️
जो खो गया, उसके लिए रोया नहीं करते, जो पा लिया, उसे खोया नहीं करते, उनके ही सितारे चमकते हैं, जो मजबूरियों का रोना रोया नहीं करते.🙏🙏🙏
Good Neha
Thank you sir
Thanks sir bhtt ache se krwaya apne 🙏🙏🙏🙏❤❤❤👍👍👍👍
thank you sir for this session
Sr aapka bahut bahut dhanyawad
Sahi bat h sir aapk jaisa hard work hm logo 🙏🙏🙏k liye nhi koi krta h
Q17) total arrangements (7-1)!=6!
All indians sit together:4!×4!
Ans:6! - 4!×4! =144.
If all Americans sit condition not possible bcoz, 6!-5!×3! =0.
So, no need to change the question.
Kuch v possible nai hai bhaiya.....4 ind and 3 🇺🇸..... Unequal pair hain... Islie kaise v bithao finally 2 indian alternative honge..... Isliye koi v answer possible nai hai bhai
Q. 29
Ans will be - 27
👉 Here U took condition only when all 3 questions are correct together, then Total (64) - All correct (1) =63
But in this 63 ways there are some ways where any 1/2 ans are right..
👉 But we have to find ways where all ans are wrong
So, when no ans is correct then ans will be 3*3*3 =27
Sir ka dimag nehi
You are my favourite sir and mathematics is my fav subject
Nyc session , thank you sir 🙏
Revision bhi krwate h sir unacademey pr waaaaaaahhhhhhhh sir dil se thanxxxx
Thank you so much sir. Nice session. Ye chapter 11-12 th mai para tha ar avi apka class mai kiya acha laga sir.
Ques 17 , previously the ques was correct you edited it and make it simple for us and you as well.
Insaan hi ho aap v . confusion aapko v hota hai but ques simple nhi krna chaiye .. Wo shi ques tha usko solve kese krna hai wo sochna prega .. No hate sir. Kafi lambe samay se aapse padh raha hu .. Geniunie review hai ye ..ki kahin kahin aap v confused ho rhe .. But still far better then other YT educators .thanks !
Rest of the class was quite good
Done
Thank you so much sir for teaching PnC in systematic way.
Thank u for providing this types of math explanation u are such a best teacher sir no one can teach like u
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Can 16 no. ans be like this
9!= total ways
6!= 5girls + 1grp of boys sitting together
5!= those boys arrangements
So ans should be
9!-5!*6!
Thanku sir
sir 36:25 me jb indian aur american ko ek seat exchange krenge to alternating ka concept gdbd ho jayega esliye 4!*4! hi hoga answer
आपका बहुत बहुत धन्यवाद गुरुजी रोज हम सब के लिए इतनी मेहनत करने के लिए बिना एक भी दिन छुट्टी लिए अगर आप खड़े है गुरुजी हम सब के लिए तो हम भी खड़े रहेंगे आपके शिष्य बनकर हमेशा,,थैंक्यू सर जी,, बहुत अच्छा सेशन था हमेशा की तरह🙏🏻👍💐
👍🏻❤️
Bhut sandar
👌❤
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Thx for fabulous class sir Ap Best teacher Ho maths ke
Aapka bhahut aabhar rahega 🙏🏻🙏🏻🙏🏻Sirji
Tquhsomuch sir🤭🤗🤗🤗🤗🤗🤗🤗aaj P & C k concepts phli baar itna acche s smjh m aya ❤️❤️🤗🇮🇳
Sir apki class se Kuch na kuch naya seekhne ko Milta hai ,,thank u sir
Thank you so much sir.❤❤
Thanku so much sir ji. Amazing session. 🙏🙏🙏🤘🤘❤️
Thanku sir ❤️❤️❤️❤️❤️❤️
Q:-अंक 1,2,3,4,5,6 से कितनी 3 अंकिय सम संख्याए बनाई जा सकती है,यदि अंकों की पूनरार्वृति कि जा सकती हैं।
YE TPYE BHI KARA DIJIYEGA SIR KAL
🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
Sir aap bhut aache padate haiii
Thanks sir and un sabhi teachers ko jo hm jese logo ko free mai etna achha content dete h 😊🤗
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Very very thanks dear respected sir jee
Thanks sir 👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾
Thanks a log guru G
🎯🚂🚃 Nice Sir G,, Shot Notes 🙏👍🚃बस इतना काबिल बनना है मुझे की, जिस तरह मेरे मां - बाप ने मुझे खुश रखा ,, मैं भी उन्हें बुढ़ापे में वैसे खुश रख सकूं,🙏🙏🙏🙋🏻♂️🙋🏻♂️🙋🏻♂️🚃🚃🚃🚃🚃🚃🚃🚃🙏🙏Thanks for hard work Sir G🙏🙏🙏🙏🙋🏻♂️🙋🏻♂️🙋🏻♂️🚃🚃🚃🚃🚃🚃🚃🚃
Yes Sir G,, 🙏🙏
Thx sir g
Thank you sir 👍👍👍❤️❤️❤️🙏🙏🙏
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Very nice classes 🙏🏻🙏🏻👍🏾❤️❤️❤️❤️❤️
Corona 2.0 and CTM2.0 ek universe ka sabse Sundar batch or ek pura universe ko hi khatm karke manega
Sir aap jaisa koi guru nhi Dekha..bina subscription aap itna aacha contant provide krte ho ..
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Tough concepts not explained at all. Still 60% questions can be solved after learning from these lectures.
Sir ap bhot acha pdathe ho thanku so much sir ji ap qusen karte ho to
Thank u so much sir 🙏🙏🙏🙏🙏🥰....
Thank u sir ji nice session
Thank you sir ji ❤️🙏
Sir aap mahan ho saare youtupe par aap jaisi math best math koi nahi padata hai aap hm logo k god ho please jo log bolte hai ki aise question nahi aate hai unki baato par dhyaan na dew please sir please my god
👍👍👍👍👍👍👍👍👍
Thanks for uploading it.. You're doing a great job
Tq sirjii ♥️
लगा दो आग पानी मे जवानी इसे कहते है । छीन लो selection कहानी उसे कहते हैं🤗🙏✌️✌️✌️✌️💪💪💪
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
👍
Nice session🥰🥰 Sir ji
sir 36:52 par agar american se start karenge alternative bitanan tobhi to 144 ayyega to 2 cases ka addtion hoke 288 nahi hoga kya sir
Best sir
Csat m alg h combination permutation vle question🙏🏻
Sandaar class sir Ji 🔥🙏
Sir. Tusi great ho
Wonderful session 👍🏻👍🏻👍🏻
Nice sir
Thank you so much sir for amazing session ❤️
Nice video sir.... U r doing a great job👍👍👍
56:25 question ka answer 10!*9
49:50
57:55 pr Answer B hoga
@Happy
🎯🙏🙏🙏🙋
Thanks for the class sir ❤️😌❤️😌❤️😌❤️😌❤️
Sir aap kuch students ko datate hai to bahut maza aata hai kuki apka tarika datane ka acha lagta hai😁🙏
👍👍👍👍💙💙
31.b.60
32.d.120
33.c.60
34.c.48
35.c.125
36.a.66
37.b.105
38...
39.c.21
40.a.190
41.a.16
42.b.105
43.d.2775
44.c.11
45.c.56
Thank you sir 🙏
Sir kal eid hai..ap chutti do
Happy eid in advance sir💐💐💐💐🇮🇳🙏
Super duper session sir ji thanks so much grand salute your dedication sir ji ❤️❤️❤️🙄❤️🙏🙏🙏🙏🙏
Awesome session
question - in how many ways 3 girls and 3 boys be seated in a row alternatively ? and
quest. - 2 boy and 2 girls in a row so that girls dont stand next to each other ..then arrangemnets ?
koi btaega in dono questions mein difference kaise hua....phle wale mein bhi b1 g1 b2 g2 b3 g3 + g1 b1 g2 b2 g3 b3 aise hi baithenge....or dusre wale mein bhi to aise hi baithenge agr hr ldki k baad ldka hi baithega jaise g1 b1 g2 b2 +b1 g1 b2 g2.....fr dono questions alg kaise hue
Sir aapne woh 3 flowers of 1 kind and 12 flowers of second kind wala question nahi krwaya
Sir aj bht confusion question. the
Sir Q No. 17 me
(4-1)! × 4P3 = 144
Sir yesa ho skata hai kya?
Sir 20 question me v 3 result possible hh pass fail pending😉😉😉😉😋😋😋😋😋
Question number - 28 -> logic was wrong in this question see another example
Q. In how many different ways can 8 examination papers be arranged in a row, so that the best and the worst papers may never come together?
Answer wil be-> 8! - 7!*2! = 30240
I am watching the class now and qns no.28 was wrongly explained..so I came to the comment section.
Sir apki classes mp patwari k liye bhi help kregi kya
Bilkul rahegi pr iski vacancy kb aa rhi h jo ap preparation kr rahe ho...🤔
Iss chapter me bahut problem hota h sir 😭😭😭😭😭😭
50.39 kya gajab bejjati hai 😂
Sir co ordinate jemetry ka nu kab ayega
🙏🙏🙏🙏🙏❤️
Sir please bataeye Q.16 me boy 5!-1ku nhi kiya🙏🙏
1st question me jo sir bta rhe h usme 7! ÷2 nhi hoga kya
Hi sir dildar
17 ka 3!×4p3 =144
Sir group d Ka new batch start kriya please
Sir 26th question 8C2 28 kaise agaya 168 ana chahiye na?
@ 18:42 question me n kisko lena h or r kisko smjh nhi aya
❤👌👌👌🙏