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#176 Help Me ! » multiple choice question » 2011-12-17 23:59:44

juantheron
Replies: 2

In a multiple choice question , there are 4 alternatives, of which one or more are correct. a candidare will get marks in question

only if he ticks all the correct answer. if the candidate ticks the answer at random but is allowed up to three chances to answer the

question , then the probability that he will get marks in the question

#177 Re: Help Me ! » volume » 2011-12-17 23:55:38

thank anonimnystefy

but how can you get it

#179 Help Me ! » volume » 2011-12-17 07:22:27

juantheron
Replies: 3

i have a question if a plane ax+by+cz+d=0 intersect coordinate axis at A, B,C , then what is the valume  formed by ABC

#181 Re: Help Me ! » largest middle digit » 2011-12-17 07:17:06

Thanks bobbym got it (above give process)

but how can you write it in your answer

#182 Re: Help Me ! » largest middle digit » 2011-12-17 06:55:26

thanks bobbym

but how can you get the answer

would you like to explain  here

#184 Re: Help Me ! » six faced dice » 2011-12-17 06:06:56

yes you are right

bobbym would you like to explain your tree diagram

thanks

#185 Re: Help Me ! » six faced dice » 2011-12-17 05:51:14

thanks anonimnystefy but  i did not understand in well manner

#186 Help Me ! » largest middle digit » 2011-12-17 05:37:27

juantheron
Replies: 6

Three digit no. are formed then what is the probability that middle digit is largest

#187 Re: Help Me ! » six faced dice » 2011-12-17 05:34:34

thanks bobbym,anonimnystefy

but how can i get this

#188 Re: Help Me ! » six faced dice » 2011-12-17 05:25:02

yes answer given as

options

(1) 5/11    (2) 5/6     (3) 6/11      (4) 1/6

yes bobbym

explanation required

#189 Help Me ! » six faced dice » 2011-12-17 04:53:39

juantheron
Replies: 18

a six faced fair dice is tnown until 1 comes , then the probability that 1 comes in even no. of trails is

#190 Re: Help Me ! » exponential equation » 2011-12-16 07:49:50

my solution

If

and
are in A.P, Then

#191 Help Me ! » continuity » 2011-12-16 07:42:20

juantheron
Replies: 1

If

; x is rational

and

;  x is irrational


then no. of values at which

is continuous is

#192 Re: Help Me ! » chess problem » 2011-12-16 07:25:31

thanks anonimnystefy  and   dude

(triying to understand that)

#194 Re: Help Me ! » a.p,g.p probability » 2011-12-16 07:16:46

three no. are choosen from the set {1,2,3,4,......,2011}. then find the probability that they  are 

(1)  three consecutive no. of an arithmetic progression

(2)  three consecutive no. of an Geometric progression

i have edit my questions

#195 Re: Help Me ! » dice problem » 2011-12-16 07:14:00

yes bobbym fully  got it

thanks

#196 Re: Help Me ! » dice problem » 2011-12-16 07:07:41

yaa i partially understand

i have last doubt

what is the meaning of equaly probable here

thank

#197 Re: Help Me ! » dice problem » 2011-12-16 06:59:10

Thanks bobbym (you are right)

sample space S={HH,HT,T1,T2,T3,T4,T5,T6}

Let B= event dice shows >4

and A=at least one tail

here n(B)= {T5,T6} and n(A)={HT,T1,T2,T3,T4,T5,T6}

So

So i have a doubt that why this is not a answer

#198 Re: Help Me ! » dice problem » 2011-12-16 06:51:44

yes how can i get it (post 2)

and where i have done wrong

#199 Re: Help Me ! » dice problem » 2011-12-16 06:46:30

yes bobbym you are right 2nd one is right

i have a question why 1 st answer is not right

#200 Help Me ! » dice problem » 2011-12-16 06:29:19

juantheron
Replies: 12

consider the experiment of tossing a coin . if the coin shows head toss it again but if it shows tail then throw a dice then

find the conditional  probability of the event 'the dice shows a no.  greater then 4'. given that there is at least one tail

my solution ::

sample space S={HH,HT,T1,T2,T3,T4,T5,T6}

Let B= event dice shows >4

and A=at least one tail

So

but answer given is

So where i have done wrong

can anyone explain me

thanks

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