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We have four boxes, each of which contains ten coloured balls: Box 1 contains 4 red balls, 5 green balls and 1 yellow ball Box 2 contains 3 red balls, 5 green balls and 2 yellow balls Box 3 contains 2 red balls, 5 green balls and 3 yellow balls Box 4 contains 1 red ball, 5 green balls and 4 yellow balls If we randomly select one ball from each box, what is the probability of selcecting exactly one red ball? If we randomly select one ball from each box, what is the probability of selcecting at one red ball?
ı think (4/10)*(3/10)*(2/10)*(1/10)
no, the answer is 0.44
but im not sure how to get that answer
ı will think wait please
we use all box isnt it?
i guess so
ı dont understand question very well 4 balls will red?
all the balls must be red ? 4 balls ? like red red red red ?
no, the answer is 0.44
of course its add up to 1
no wait got
1 ball from EACH box
so, P = 1red from box1 and 3no-red + 1 red from box2 and 3 no red +...
still dont get it
Okay... what's the probability of getting a red ball from ONLY the first box? That's the product of the probability of getting a red ball from the first box and NOT getting a red ball from the other three boxes...
should I use bionomial probability?
I don't know what that is ^ (c'mon go easy on me :> ) But it seems the odds of getting a red ball from the first box is 2 out of 5 odds of NOT getting a red ball from the second box is 7 out of 10 not getting a red ball from the third : 4 out of 5 not getting a red ball from the fourth : 9 out of 10 Now just multiply these, and this'll be one of the things you add...
ı did the questions
merhaba, @honourznr What did you get? ^.^
(4/10*7/10*8/10*9/10)+ (3/10*6/10*8/10*9/10)+(2/10*9/10*7/10*6/10)+(1/10*8/10*7/10*6/10)= 0.436=0.44
It's like "hello" only more exotic
Well, as long as @honourznr did the arithmetic correctly... there's no reason for it to be wrong :)
On second thought, maybe you need to redo that, @honourznr
Okay, it's correct.. just jumbled up in the products, but correct :D
woww asweome what about the second one ?
At least one red ball?
for example red green green yellow
a little confusing...
also, @honourznr I did not understand that :D
so yashar806 do you understand the answer
bileydim en baştan türkçe konuşıurdum:D
sne össye falanmı hazırlnısn
DogoTürkistan'yi biliyor musun?
evet biliyorum bnde türkiyedeyim
ancak ben peterpanı anlamadım adam merhaba dedi türk değil nerden anladı türk olduğumu:)
Benim adım yashar
memnun oldum yaşar :) iyiakşamlar ben gidiyorum
benda qok memnun oldum onur
bana mesaj yolla konuşuruz sonra ....
tamam , iyiakshamlar