Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
Master Table for Solving Problems
3,510 plays

More
This lesson tells an entirely different approach to solving the questions. One can learn the faster method to handle the questions.

Abhishek Kumar
Love to explore life| UPSC Aspirant| Cleared SBI PO| Cleared BOB PO| NDA, AFCAT exam| Attended SSB thrice| Worked as Software engineer IBM

U
Unacademy user
Differences between Formal & Informal Sectors in India: formal sector as activities which are taxed and monitored by the government and the activities involved are included in the Gross Domestic Product(GDP). In contrast to formal economy is the informal sector which is neither taxed nor included in the GDP and Gross national product (GNP) of a country.
Hungry Lion
2 years ago
can u explain why not include in gdp in the case of informal
Ravi Rajput
2 years ago
The informal sector, informal economy, or grey economy is the part of an economy that is neither taxed, nor monitored by any form of government. Unlike the formal economy, activities of the informal economy are not included in the gross national product (GNP) and gross domestic product (GDP) of a country.
Hungry Lion
2 years ago
if a carpenter make a table sold to any furniture shop govt charged gst on value addition how can u say that informal sector is not taxed
Chandra Acharya
2 years ago
what is tge diff between unformal and unorganised sector ? are both same ?
Chandra Acharya
2 years ago
*informal and unorganised
Hungry Lion
2 years ago
unorganised sector take account in gdp but informal cant
Chandra Acharya
2 years ago
thank you !
This method is very useful and it is very helpfull........but there wil be exceptions r8 sir??.......if in que 2 ch3 if the x is having value of -1 & -2 and y having -2 and -3 or having values like that then the result will be x<=y na??then how can that be CND??please describe sir!!
what is the difference between case 2 and case 3? plz explain?
What if in the Plus(+) and minus(-) case the positive values of both x and y are equal? Is there any way to check that?
thanks , its really save our time
Does this imply that whenever we get any question wherein x and y are both possessing positive(+) and negative(-) values, it Cannot be Determined? Or are we expected to solve it anyway?
Abhishek Kumar
3 years ago
it will always be can't be determined if x is +ve,-ve and y is also +ve,-ve. Try to solve some questions based on it and you will always get CND in this case.
Hari Ashwath
3 years ago
Thank you so much. Cheers!
  1. Quadratic equation Presented by: Abhishek Kumar


  2. About me: Cleared Bank Of Baroda PO Cleared SSC CHSL Cracked NDA,AFCAT exam Attended SSB thrice Currently working in IBM India Follow me: https://unacademy.com/userlAbhishek_kr Contribute


  3. Master table Signs visible in the X/Y's Question Equation Signs of actual values of X or Y Larger Value's Sign, Smaller Value's sign


  4. Example x2 7x 12 0 y2-5y + 6-0 Soln: The signs of X's equation are and +, which means their solution is and . Both negative values. (Refer to the table) The signs of Y's equation are - and +, which means their solution values are and +. Both positive values. Obviously, X's possible values are both negative... And Y's possible values are both positive. Obviously, solution is X < Y


  5. Example: x2 + 21x-32 = 0 y + 7y 12 0 Soln: The question's signs are and -, for both X & Y equations. Which means X and Y's values can be both positive or negative, as per master table... Answer is an instant CND (Can Not Determine. This takes hardly 5 seconds.


  6. Example x2-12x+32 = 0 y-7y 12 0 Soln: The question's symbols are -, which means both values will be positive for each variable, x and y. x2-4x - 8x32 0 x(x-4)-4(x-8) = 0 X=4, X=8 y2-7y + 12=0 y2 -4y -3y+ 12 0 y(y-4)-3(y-4) = 0 Y= 4, Y = 4 So, X >= Y


  7. Thank you