13(D)n-1-\frac{k}{2}(k-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
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UP 0 DOWN 0 0 80
80 Answers
11yaar abhi yeh maine ques na banaye hain na book se uthai hain
these r 4m my tests
33I think Rajat's answer is right... and mani check ur options....
or recheck the data of questions... :)
11SACCHI 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
1[3]
mereko probability aur permutation ni ata [3]
woh random guess tha [3]
11SKY JI ABHI MERE PASS ANSWER NAHIN HAI
KAL TAK MILENGE ANSWERS MUJHE
U CAN POST UR WORK AND WE SHALL VERIFY IT TOMORROW[1]
11The options to the Q4 r
(a)5m/m+8N
(b)3m/m+8N
(c)7m/m+8N
(d)9m/m+8N
1i've a li'l doubt... r d 2 teachers fixed or any 2 teachers can perform d event...!!???
1@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...!!!
21Mani options de yaar lagta hai HUNDRED percent kuch rong hai........
I m sure ans : 7C2.2^4 / 7^4
1arey prob is like d prob that u get a rite answer is less :P
so optionz will work bettr
1hmmm... now i must solve dis... sab guesses galat... [3] [4]
well, provide d options if possible...!!!
1oyeeeeeeeeee answer is E kya options de .meko answer A aara hai :P
11Akand i interpret is as it given for only 1 subject(understood)
11no miss unnamed ,integrations .........................
the answer is (E)[1]
but this is not the answer[2]
1is 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
11bhai 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]