Thursday, February 14, 2013

Updated key of NSTSE by unified Council

15 comments:

Anonymous said...

what's the expected cutoff for 10th class

Anonymous said...

New keys are gud in respet to class 9th. The answers for 10th,25th and 49 th qns. have been changed which is welcomable

Anonymous said...

getting 88 in class 9? Poor score :-(

Anonymous said...

these people still havent deleted the 49th question in class 10th....
i am getting 93 (only if i consider it to be a bonus)

what should i do now??

Anonymous said...

Exactly....In class 10 question 49 should be deleted...Please email it to unified council at
exam@unifiedcouncil.com
I have already sent mails to them...
You can also call them...

Anonymous said...

Q49 is a problem for all the classes...this question has already been deleted/changed for classes 7,8,9;P.....Only for class 10 it hasn't been changed..

Anonymous said...

Getting 93 in Class 9, anyone getting more??????????

Anonymous said...

93(Class 8th)
BOSS

Anonymous said...

Please solve this question...
f(x) is a polynomial inx. f(2)=3,f(3)=2, what is the remainder when f(x) is divided by (x-2)(x-3), what is the remainder....

Anonymous said...

man......they still havent changed it .....i have sent a dozen mails to them.....owner of the blog pls do something

Shivam Bhagat said...

SOLUTION:

we are dividing f(x) by (x-2)(x-3)
i.e x^2 -5x+6

see, whenever we divide by a quadratic expression i.e of degree2
(like in this case)..we get a remainder either of degree 1(in the form of ax+b) or a constant term

dividend=divisor*quotient+remainder
let the quotient be q(x) and rem be ax+b

f(x)=(x-2)(x-3)*q(x)+(ax+b)

Put x=2;

f(2)=(2-2)(3-2)*q(2)+a*2+b
2a+b=3..........(1)

put x=3
f(3)=(2-3)(3-3)*q(3)+a*3+b
3a+b=2........(2)

by (1) and (2)...
a=-1
b=5

remainder = ax+b... (-x+5)
or 5-x ANS

hope u understood


Anonymous said...

Yay!! 95 In Class 9.
Yo Yo Honey Singh
Got
23/25 maths
25/25 physics
19/20 bio
18/20 chem
10/10 GK
Yo yo honey singh

Anonymous said...

@ shivam ..... thanks...I got it....

Anonymous said...

pls do something about q49....class 10

Anonymous said...

victory at last.....UNIFIED COUNCIL HAS DELETED Q 49 IN CLASS 10
thanks to the e-mail bombarders..
but the answer sheets checked in this period of 4 days( from 14-18) will suffer...as they aren't going to check again....are they?/