UPSC CSAT - Basic Concept Of Number System (संख्या पद्धति ) | UPSC IAS 2024 | Short Tricks | OnlyIAS
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Day by day this Coaching institute is shining between who can’t afford coaching 🙏 thanks to all teachers especially Rishab sir🎉
For those who don't understood last question 👍👍✍️
See we have two digit number
ab means 10a +b according to representation rule
After reversing it becomes
10b+a and the difference between them is 27 ,so
Evaluate
(10a+b) -(10b+a)=27
9a-9b =27
Take 9 common
a-b = 3
So we get an condition
In question they said two digit numbers means digits are from 1 to 9
So place all numbers in obtained equation
1) (a=3,b=0) =3 after (a-c)
2) (4,1)
3) (5,2)
4)(6,3)
5)(7,4)
6) (8,5)
7)(9,6)
7 possible values
I hope you got it❤❤
ans is none, and in option one you have taken B as 0 which is not possible because when we reverse the number it will become ba which will be 03 which is single digit number, not two digit number as mentioned in the question, and in all other options if we minus ab and ba we will not get 27 as asked in the question so answer will be D) none
1st PQ (C) 511/333
2nd PQ (D) 8
3rd PQ (D) None (6)
thank you so much sir
Can you explain last one
@@ronitk2044 Find difference a-b like sir did which will be 3 , like that the nos are 14, 25, 36,47, 58, 69 satisfy the condition , total 6
@@chaya9119 can u explain how 14, 25 till 69 has been calculated please
@tanishagupta4302 which question?
@@prativasingh7905 it shall be (4-1=3), (5-2=3), (6-3=3), (7-4=3)..... It is 41,52,63,74,85,96
East to West Rishab Sir is the Best🎉🎉🎉
Mind changes time to time
@@abhayjha2390yes but some people are special and they gave a big contribution in our life ❤ so some teachers are very special and equal to god 😍
Practice questions -
1) option c (511/333)
2) option d (8)
3) option d (none) (6)
Thank you so much sir for this session. Hope that you continue this session.
Respected,how you solve last practice questions?
It is 12 for the last ...we have to count the reversed (numbers) also🤔
@@None-lr2cy ok 👍🏻
@None-lr2cy bro, we have to identify the differences between numbers
The difference is 3, so 6 pairs formed out of 12 numbers
Undoubtedly here is doing great. Loads of thank you
Tonnes of thank u sir 🙏 pls continue this series every Sunday ✌✨🙏
Sir aaj ke video ke liye aapko bhut bhut dhanyavaad
. Aise hii aashirvaad rahe aapka. ❤🙏🙏❤
sir please continues this series for full preparation 🙏🙏🙏🙏
Rishab sir always support. Our upsc journey.. Thank you so much💖💖💖💖💖😊😊😊 sir🙏🙏🙏🙏🙏🙏🙏
Thank you so much sir for your effort 🙏
Thankyou sir. Pls continue this series
last question solution: let original no be xy i.e, 10x+y so reversed no = yx i.e, 10y+x. given that xy-yx=27, so 10x+y-10y-x=27 => 9x-9y=27 => x-y=3 => y=x-3. now start substituting values into x from 0 and respective value of y will be (x-3) like if x=3 then y=0 so no.=30 similarly we'll get 41,52,63,74,85 and 96. So, total 7 such numbers.
6 numbers, nicely explained 👍👌 found helpful 👍
@@divyaupadhyay9311total -7 numbers because 30 will also be included
30 include nhi hoga because agar iska reverse number lenge 03 to wo single digit number ho jayegi ...@@anamikarao1010
03 is single digit
Literally one of the best series for CSAT, if not THE BEST.💯
Tysm sir u r the best faculty of onlyias❤
very good initiative
Sir absolutely we get success because of your favour
Thank you so much dear sir....🙏🏻
Please continue this Series 🙏🏻
Q1: (c) 511/333 14:52
Q2: (d) 8 44:25
Q3: (d) none 49:43
Thankyou for the class sir
Thank you sir ❤
Number System Completed
Sir please post such video for every day for each aptitude .. Thank you so much for that.
Wow what a amazing simplest way of csat
Are u a upsc aspirant
@@Muskan70953 ya
Kbse suru kri preparation
Kbse start kri preparation
@@Muskan70953 2021
May God bless you sir ❤
Good explained sir
PQ - 511/333
PQ - 8
PQ - difference is 3
Thnx ❤
Bahut aache se samjhaya hai sir aapne... Thank you so much sir🙏🙏
Thank you so much sir for this CSAT session 🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗🙏🤗
1)C
2)B
3)C
Thankyou sir for this effort
C
D
D
Thank u so much sir for this wonderful session , it'll help me a lot🙏
Great to have u here, sir. I'm a regular student from one of ur batches.🙂🙏🏻
Sme😊
Thanks Sir 🙏
Sir aap Itna clear batatey ho Nice class sir 😊
Very much thank sir
Fantastic session 👏❤❤
Thankyou sir
Thank you so much sir ji ❤❤❤❤
Rishav sir hai to mumkin hai❤🙏
Sir my request is that ki we are beginners and we want you to go basic bit by bit in steps by explaining steps and concsepts
i hope that my request will be incorporrated thank you
SO LOT OF THANK YOU RISHAV SIR
Very very nice sir,
But one request mid me dropped nahi karna,
CSAT also completed
Thankkk you soooooo much sir ji!!!!! 🎉🎉🎉❤❤❤❤
Sir ji thankyou for yours efforts💯💯🙌🙌
waiting for next session 🙇♀🙇♀🙇♀🙇♀
The sum of two digit of number is 7.if 27 added to interchange number . what is the number? ( Please give details explanation if possible)
Please sir continue classes for CSAT in TH-cam itself 🎉❤❤
Ofcourse 🎉🎉🎉🎉it's so important
44:21 d is correct
49:35 option d is correct
Bahut achhi class hai sir thank you so much ❤❤❤❤
14:55- answer c 511/333
Thanku so mach sir 🙏🏻🙏🏻
SHIVRAAM
Yes sir clear
Thank you dear sir 💖
💖💖💖Rishiv sir💖💖💖
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Apke liye koi words nhi h ,🙏🙏🙏 bs thnk alot
Thanku sir kafi a6ha lgi class pls continue series sir
thank you so much sir you taught so well
OnlyIAS An Emotion❤
Sir plz continue this series 🙏
Thank you so much Sir😊🙏🏻
It's really helpful.
Sir please make a vedio of 2023 csat paper solution 🙏🙏🙏🙏🙏🙏
Last ans is 9 (D none ) difference is 3
(10a+b)-(10b+a)=9(a-b)
9(a-b)=27
a-b=27/9=3
How did you determine it to be 9 ? Pls explain, thanks
Excellent sir ji
What is time of this class. and is scheduled for all day??.. please do tell us sir
Thank you so much for this session 🙏❤️
14:56 option c==>1533/999=511/333
Please continue this topic till end sir.
Good Afternoon sir
The last one question's answer is 3
a+b= 10a+b------- equation (1)
b+a= 10b+a-------- equation (2)
So, the difference between two digits is 27:-
Then,
(10a+b)-(10b+a) = 27
10a+b-10b-a = 27
9a-9b = 27
Let's take 9 common;
9(a-b) = 27(divide by 9)
a-b = 3
So, there are 3 numbers.
😊❤
I hope you understood.
BUT further its asking how many such digits will form???sirf digit nai puchi hai..how many possibilities puchi hai
@@ayu24222 so, it would be three either.
Thank u sir...
You're God for me ❤
❤❤❤
Continue this series...
Nice content
Last question unable to solve, please help.
thank u so much sir ji
14:54 Q1 - 511/333
44:23 Q2 - 8
49:40 Q3 - None (7)
Nice 👍
Smart 🤓 guy 😮😮
First qus 1.534534 wale me ans 511/333 aayega
Thanks sir ❤🎉
q1. answer = c) 511/333
q2. answer = d) 8
q3 answer = d ) none
shukriya shukriya dear sir
15:18 option b is right answers
Sir, please suggest the best book for the entire CSAT, or separate books for quantitative aptitude and reasoning. Please reply 🙏
Answer 1. 511/333
2. 8
3. There are 3 two digit no.
511/333 is the correct✅ answer sir
44:52 option b is right answers
Sir thankyouuuuuuu sooooooooo muchhhhhhhhh 😘😅
👍👍👍👍👍👍
apki kasam .....apni trf se 100% dunga aaj se❤
2nd PYQ - 8
1 c option is right sir
2 UPSC PYQ 2018 d option is right sir
3 a option is right sir
1) option C 511/333
2) option D 8
Sir topic wise class' s ki series shuru he ❓
Thanks a lot
Option c is the answer
Option C is right answer..... 1533/999=511/333.
Thank you !
Ans.
1- 511/333
2- 8
Pta nahi kyu हर टीचर अपनी सीरीज को बीच में छोड़ देते है
Please sir aap मत छोड़ना
sir pls continue and complete CSAT tq sir
Sir the answer of 1st question u asked is
c)511/333