sorry the question have been edited
now try this one[1]
Here i will be posting ques on probability which could prove to be useful 4 every1
Do try to give explanations if u can
options will be given on demand[1]
Q1
If the papers of 4 students can be checked by any one of 7 teachers , then the probability that all the 4 papers r checked by exactly 2 teachers
-
UP 0 DOWN 0 0 80
80 Answers
yaar abhi yeh maine ques na banaye hain na book se uthai hain
these r 4m my tests
I think Rajat's answer is right... and mani check ur options....
or recheck the data of questions... :)
SACCHI BAATAON MERE KO BHI NAHIN AATA [3]
TABHIE TO YEH THRAD BANAYA HAI
IIT MEIN ISKI 20-25 MARKS KI WEIGHTAGE HAI[1]
koi baat nahin
ek random tukke ke saath random explaination bhi de do
[3]
mereko probability aur permutation ni ata [3]
woh random guess tha [3]
SKY JI ABHI MERE PASS ANSWER NAHIN HAI
KAL TAK MILENGE ANSWERS MUJHE
U CAN POST UR WORK AND WE SHALL VERIFY IT TOMORROW[1]
i've a li'l doubt... r d 2 teachers fixed or any 2 teachers can perform d event...!!???
@tapan...
well, i'm not so sure about dat term... my first answer is wrong since it also includes d cases when all d 4 papers are evaluated by only one teacher... which is not d case...
in second answer... first i selected 2 papers 4m d 4... gave each teacher one... then distributed d other 2 papers randomly...
but dis also seems wrong... let me think further...!!!
Mani options de yaar lagta hai HUNDRED percent kuch rong hai........
I m sure ans : 7C2.2^4 / 7^4
arey prob is like d prob that u get a rite answer is less :P
so optionz will work bettr
hmmm... now i must solve dis... sab guesses galat... [3] [4]
well, provide d options if possible...!!!
oyeeeeeeeeee answer is E kya options de .meko answer A aara hai :P
no miss unnamed ,integrations .........................
the answer is (E)[1]
but this is not the answer[2]
is dere only 1 paper foe each student......i mean is he writin only one exam or 5 subjects like us???????????????
this doubt might be dumb but anyways a doubt is always a doubt hehe
bhai IIT ka paper tunne bhi dena hai
if if u see any ques lash upon it
i will be glad to see an explained solution !!!!!!!!!![2]