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#226 Re: Help Me ! » prob. of equolateral triangle » 2011-12-14 08:03:02

thanks dude and bobbym

bobbym why we take total = 21

#227 Help Me ! » geometrical probability » 2011-12-14 08:00:23

juantheron
Replies: 8

a point

is selected at random in a sphere. then find the probability that the point
is closer to the

center of the sphere than to its surface

#228 Re: Help Me ! » prob. of equolateral triangle » 2011-12-14 07:37:25

no bobby actually i am sitting in a room  , and in my room i have count it

#229 Re: Help Me ! » prob. of equolateral triangle » 2011-12-14 07:20:27

great bobbym

as i have seen the answer, I am surprised how you count all that things

#230 Re: Help Me ! » prob. of equolateral triangle » 2011-12-14 06:49:08

thanks bobbym

bobbym can you explain it

#231 Help Me ! » prob. of equolateral triangle » 2011-12-14 05:59:48

juantheron
Replies: 12

from 8 vertex of a cube , 3 vertices are choosen at random. then find probability that these 3 vertices form an equilateral triangle

#233 Re: Help Me ! » conditional probability » 2011-12-14 05:37:29

bob bundy i want some explanation for your figure

thanks

#234 Help Me ! » conditional probability » 2011-12-14 05:07:04

juantheron
Replies: 8

If A and B are two events associated with a random experiment

then How can i Prove that 

#237 Re: Help Me ! » apples » 2011-12-14 04:46:03

yes bobbym yor are saying right

in how many ways we take 2 apples from 10 apples.

#238 Help Me ! » persons sitting in a row » 2011-12-14 03:46:23

juantheron
Replies: 3

if n persons are sitting in a row . 2 persons are selected at random then find the probability that these 2 selected person are not sitting together

#240 Help Me ! » apples » 2011-12-14 03:43:02

juantheron
Replies: 3

a have a doubt

If there are 10 apple arrange in a row. then find the probability for taking 2 apple from 10 apples

#241 Help Me ! » system of equations » 2011-12-12 23:44:35

juantheron
Replies: 5

solve the system of equation

#242 Re: Help Me ! » vector » 2011-12-10 17:26:08

thanks bob bundy got it

means we can not express in single variable scalar form

#243 Help Me ! » probability on no. » 2011-12-10 17:18:01

juantheron
Replies: 2

(1) a no. denoted by x , is choosen from the set {1,2,3,4}. and a second no. ,is denoted by y, is choosen from the set {1,2,3,....,x}

then probability that of (y=1) is

#244 Re: Help Me ! » vector » 2011-12-08 18:02:43

actually answer in is given like as

If  a vector

in the plane of 
and 

then it can be express as 

so my question is that why we can not  express

as

because if

and
are in same plane then

are Coplanar. the we can express

as 

So can anyone clear my doubt about that

thank

#245 Help Me ! » binomial » 2011-12-08 17:55:24

juantheron
Replies: 1

how can i prove that

#247 Re: Help Me ! » probability » 2011-12-08 02:36:25

thanks to all for nice explanation

#248 Help Me ! » vector » 2011-12-08 02:35:01

juantheron
Replies: 4

Let a vector

and

be three vector .

A vector

in the plane of
and

whose projection on
is

is given by

#249 Help Me ! » probability » 2011-12-05 13:08:03

juantheron
Replies: 15

Three numbers are chosen at random between 0 and 1. What is the probability that the greatest minus the least is less than

#250 Help Me ! » diviser probability » 2011-12-05 13:05:22

juantheron
Replies: 2

Find the probability that a randomly chosen positive divisor of

is also a divisor of
.

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